London's BPO market now spans much more than call centres. Providers manage customer experience, finance, HR, procurement, compliance, data-heavy back-office work, and increasingly AI-enabled operations. For buyers, the main decision is not simply cost, but how much process ownership, sector expertise, technology integration, and local governance a partner can provide. London-based and London-serving teams also matter when contracts involve UK regulation, stakeholder access, or European business hours.

1. NeoWork

NeoWork combines global staffing with managed operations for companies that want dedicated teams without building every support function in-house. Its service mix covers customer experience, virtual assistants, IT and development, AI training, creative work, and operational roles. For larger engagements, its Operations Partnership model adds sourcing, training, supervision, quality assurance, workforce management, scheduling, and reporting around a dedicated team.

The company primarily works with clients in North America, Europe, and Australia, while its delivery model draws on talent in locations including the Philippines and Colombia. That makes NeoWork relevant to London businesses that want European client coverage paired with offshore or nearshore staffing. Its 24/7 operating model is particularly suited to support and operational workflows that need coverage beyond standard UK business hours.

Key Facts

• Best for: Growth-stage companies that want dedicated remote teams plus managed operations
• Core services: BPO, customer experience, virtual assistants, IT and development, AI training, creative services
• Talent metrics: 91% annualized teammate retention rate and 3.2% candidate selectivity rate
• Service model: Global staffing and fully managed operations partnerships
• Geographic fit: Works with clients across Europe, North America, and Australia
• Notable strength: Managed teams can include QA, workforce management, scheduling, and dedicated reporting

Contact Information

• Website: www.neowork.com 
• LinkedIn: www.linkedin.com/company/neoworkteam 
• Facebook: www.facebook.com/neoworkteam 
• Instagram: www.instagram.com/neoworkteam 

2. Concentrix

Concentrix runs customer experience and technology operations for large organizations, with services spanning customer care, sales, technical support, back-office work, analytics, automation, and digital transformation. Its UK and Ireland network includes London as part of a broader national delivery footprint, giving buyers access to local account coverage alongside a global operating model.

The company is a practical fit for enterprises that need high-volume, multi-channel customer operations or want to combine contact-centre outsourcing with digital platforms and process redesign. Concentrix also operates across a wide range of sectors, so its London presence is backed by specialist capabilities rather than a single-function call-centre model.

Key Facts

• Best for: Large organizations with complex, high-volume customer operations
• Core services: Customer care, sales, technical support, back-office operations, analytics, automation
• Specialization: Customer experience and technology-led operations
• Location: London, UK, within a wider UK and Ireland delivery network

Contact Information

• Website: www.concentrix.com 
• Phone: +1-800-747-0583
• LinkedIn: www.linkedin.com/company/concentrix
• Facebook: www.facebook.com/p/Concentrix-100064784884066
• Twitter: x.com/concentrix
• Instagram: www.instagram.com/concentrix

3. WNS

WNS provides business process management and digital operations across functions such as customer experience, finance and accounting, procurement, analytics, and industry-specific operations. Its London office at Bunhill Row gives the company a direct presence in the capital, while its wider delivery network supports programs that span multiple countries and time zones.

Its model is especially relevant to enterprises that want a provider to take responsibility for a defined business process rather than simply supply individual agents. WNS combines operational delivery with analytics and transformation work, which can suit organizations redesigning finance, customer, or industry workflows while keeping governance and stakeholder access in London.

Key Facts

• Best for: Enterprises outsourcing end-to-end operational processes
• Core services: Customer experience, finance and accounting, procurement, analytics, digital operations
• Specialization: Business process management with industry-specific delivery

Contact information

• Website: www.wns.com 
• Phone: +44 (0) 20 7993 7900
• Email: Careers@WNS
• Address: HYLO, 23rd Floor, 105 Bunhill Row, London, EC1Y 8LZ
• LinkedIn: www.linkedin.com/company/wns-global-services
• Facebook: www.facebook.com/wnsglobalservices
• Twitter: x.com/wnsholdings
• Instagram: www.instagram.com/wnsvibe

4. Genpact

Genpact handles enterprise operations across finance and accounting, customer care, HR, sourcing and procurement, supply chain, risk and compliance, sales operations, and technology-enabled process work. Its London office at 110 Bishopsgate provides a local base for UK clients while the company delivers through a much larger international operations network.

The breadth of its operating model makes Genpact relevant to organizations that are moving beyond a single outsourced function. It can connect process delivery with data, automation, and transformation programs, which is useful when finance, supply chain, customer service, or compliance workflows need to be standardized across business units.

Key Facts

• Best for: Large enterprises transforming multiple operational functions
• Core services: Finance and accounting, customer care, HR, procurement, supply chain, risk and compliance
• Specialization: Data and technology-enabled business operations

Contact Information

• Website: www.genpact.com 
• Phone: +44 (0) 207 227 5200
• Email: hr.helpdeskexit@genpact.com
• Address: 110 Bishopsgate, London EC2N 4AY
• LinkedIn: www.linkedin.com/company/genpact
• Facebook: www.facebook.com/ProudToBeGenpact
• Twitter: x.com/genpact

5. Firstsource

Firstsource delivers business process services with a strong focus on customer experience, collections, back-office operations, and digitally supported workflows. Its UK head office is in Hammersmith, London, and the company works extensively in regulated and service-intensive sectors including banking and financial services, healthcare, communications, media, technology, and utilities.

For London buyers, the combination of a local corporate base and scaled delivery operations is useful where customer journeys need to be managed alongside compliance, collections, or administrative processes. Firstsource has also been building its model around human and AI-supported operations, making it relevant to businesses that want to modernize established service processes rather than outsource them unchanged.

Key Facts

• Best for: Regulated industries with customer service and back-office workloads
• Core services: Customer experience, collections, back-office operations, digital process services
• Industries: Banking and financial services, healthcare, communications, media, technology, utilities

Contact Information

• Website: www.firstsource.com
• Address: Floor 8, Lynton House, 7-12 Tavistock Square, London, WC1H 9LT
• LinkedIn: www.linkedin.com/company/firstsource-solutions-limited
• Facebook: www.facebook.com/firstsource
• Twitter: x.com/firstsource
• Instagram: www.instagram.com/firstsourceglobal

6. Capita

Capita is a UK-headquartered outsourcing and professional services group that manages customer, citizen, and business processes for public-sector bodies and private organizations. Its work includes contact-centre operations, customer services, payments and collections, pensions administration, and other complex service processes supported by technology and automation.

The company is particularly relevant when a London organization needs a provider familiar with UK public services, regulated environments, or large-scale customer interactions. Capita's registered office is in Paddington, and its operating model combines people, digital tools, and process management rather than treating outsourced service delivery as a standalone contact-centre function.

Key Facts

• Best for: UK organizations with complex customer, citizen, or administrative services
• Core services: Customer services, contact centres, payments and collections, pensions and process administration
• Specialization: Technology-supported outsourcing for public and private sectors

Contact Information

• Website: www.capita.com
• LinkedIn: www.linkedin.com/company/capita
• Facebook: www.facebook.com/Capitaplc
• Twitter: x.com/CapitaPlc
• Instagram: www.instagram.com/lifeatcapita

7. Foundever

Foundever focuses on outsourced customer experience, with UK services covering customer care, technical support, sales and retention, collections, back-office support, multilingual operations, and trust and safety. The company operates across the UK and has a contact-centre presence in Kingston upon Thames, giving it a Greater London delivery location as well as access to its international CX network.

Its service range fits businesses that want one provider to handle several stages of the customer lifecycle, from sales and onboarding through support, retention, and specialist technical interactions. Foundever also supports remote and hybrid delivery models, which gives London-based clients more flexibility in how customer operations are staffed.

Key Facts

• Best for: Brands outsourcing multi-channel customer experience at scale
• Core services: Customer care, technical support, sales and retention, collections, back-office support
• Specialization: Customer experience, multilingual delivery, trust and safety

Contact Information

• Website: foundever.com
• LinkedIn: www.linkedin.com/company/foundever
• Facebook: www.facebook.com/FoundeverWorld
• Twitter: x.com/foundeverglobal
• Instagram: www.instagram.com/foundever_life

8. Infosys BPM

Infosys BPM provides business process management across finance and accounting, customer experience, sourcing and procurement, HR-related processes, analytics, master data, automation, trust and safety, and other enterprise functions. Its London office is in Canary Wharf, providing a local base for UK engagements within the broader Infosys organization.

The company is most relevant to large businesses that want process outsourcing closely connected to enterprise technology. Its BPM work can sit alongside automation, analytics, data, and transformation initiatives, which helps when the objective is to redesign a process while moving its day-to-day operation to a managed service.

Key Facts

• Best for: Enterprises combining process outsourcing with technology transformation
• Core services: Finance and accounting, customer experience, procurement, analytics, automation, HR processes
• Specialization: Enterprise business process management

Contact Information

• Website: www.infosysbpm.com
• Phone: +44 20 7715 3300
• Email: InfosysBPM@infosys.com
• Address: 14th Floor, 10 Upper Bank Street, Canary Wharf, London E14 5NP
• Facebook: www.facebook.com/InfosysBPM
• Linkedin: www.linkedin.com/company/infosys-bpm
• Twitter: x.com/infosysbpm
• Instagram: www.instagram.com/infosysbpm

9. Accenture

Accenture's managed services cover business operations alongside technology, data, AI, automation, and cloud capabilities. In a BPO context, that includes functions such as finance operations, procurement and supply chain, customer service, and other enterprise processes that can be run as ongoing managed services. The company has a major London office at 30 Fenchurch Street.

Accenture is most relevant when outsourcing is part of a broader transformation program rather than a stand-alone cost reduction exercise. A London enterprise can use the same provider for process redesign, systems integration, automation, and ongoing operations, which is useful for complex programs where technology and operating-model changes are tightly connected.

Key Facts

• Best for: Large enterprises combining managed operations with technology transformation
• Core services: Managed business operations, finance, procurement, supply chain, customer services
• Specialization: Technology, data, AI, automation, and managed services

Contact Information

• Website: www.accenture.com
• Phone: +44 20 7844 4000
• Address: 30 Fenchurch Street, London EC3M 3BD

10. Cognizant

Cognizant provides business process services across customer care, finance and accounting, HR and employee experience, sales and marketing operations, and supply-chain processes. Its BPS work is closely connected to the company's technology consulting, data, automation, and AI capabilities, allowing clients to change both the workflow and the systems that support it.

The London office at 280 Bishopsgate gives Cognizant a local base for UK and Ireland clients. The model suits enterprises that want to modernize mature operational functions while retaining one provider across consulting, implementation, and managed process delivery, especially where automation and AI are becoming part of day-to-day operations.

Key Facts

• Best for: Enterprises modernizing established business processes
• Core services: Customer care, finance and accounting, HR, sales operations, supply-chain processes
• Specialization: Business process services integrated with technology and AI

Contact Information

• Website: www.cognizant.com
• Phone: +45 33 44 43 00
• Email: CWSUKI@cognizant.com
• Address: 280 Bishopsgate, London, EC2M 4AG, England
• LinkedIn: www.linkedin.com/company/cognizant
• Facebook: www.facebook.com/Cognizant
• Twitter: x.com/cognizant
• Instagram: www.instagram.com/cognizant

11. EXL

EXL combines business operations with analytics, data, and AI, with managed services across customer operations, finance and administration, healthcare, insurance, banking, and other data-intensive processes. Its UK and European operations include a London office at St Clare House in the City.

The company is particularly relevant to London organizations in insurance and financial services because it supports specialist operating processes as well as broader transformation work. EXL's London Market capabilities include managed operations around underwriting, claims, finance, and support functions, giving buyers an option for domain-heavy processes where industry knowledge matters as much as labour capacity.

Key Facts

• Best for: Data-intensive and regulated operational processes
• Core services: Customer operations, finance and administration, insurance and healthcare operations
• Industries: Insurance, banking and financial services, healthcare

Contact Information

• Website: www.exlservice.com
• Phone: +1 212-277-7100
• Address: 1st Floor, St Clare House, 30-33 Minories, London- EC3N1DD, United Kingdom
• LinkedIn: www.linkedin.com/company/exl-service
• Facebook: www.facebook.com/ExlService
• Twitter: x.com/exl_service
• Instagram: www.instagram.com/exl_service

12. Accace Adept

Accace Adept provides outsourced accounting, payroll, tax compliance, corporate secretarial, and related business services in the UK. The joint venture combines Accace's international BPO platform with Adept Advisory's local presence, giving companies a route to outsource finance and corporate administration from a Mayfair office.

This is a different BPO profile from a large contact-centre provider. It is better aligned with companies that need recurring accounting, payroll, compliance, or entity-management work, particularly international businesses entering or operating in the UK. The same network can also support multi-country requirements, which is useful when a London entity is only one part of a broader European footprint.

Key Facts

• Best for: Finance, payroll, tax, and corporate administration outsourcing
• Core services: Accounting and reporting, payroll, tax compliance, corporate secretarial services
• Specialization: Back-office and compliance support for UK and international businesses

Contact Information

• Website: www.accace.co.uk
• Phone: +44 207 692 8481
• Email: unitedkingdom@accace.com
• Address: Berkeley Suite, 35 Berkeley Square, Mayfair, London W1J 5BF, United Kingdom
• LinkedIn: www.linkedin.com/company/accace-adept-united-kingdom
• Facebook: www.facebook.com/people/Accace-Adept/100083366079988
• Twitter: x.com/AccaceAdept
• Instagram: www.instagram.com/accace_adept

13. Corpshore UK

Corpshore UK offers BPO services from a London base, covering customer service, technical support, sales and lead generation, back-office processing, finance and accounting, order management, claims and patient support, trust and safety, virtual assistants, and multilingual support. It also operates technology and AI service lines, giving clients access to development or automation capabilities alongside operational delivery.

The company can suit businesses that want a London-based commercial relationship without limiting delivery to a single process type. Its mix of front-office and back-office services is broad enough for companies building a multi-function outsourced team, while the Covent Garden address provides a clear local presence for UK clients.

Key Facts

• Best for: Businesses outsourcing several customer and back-office functions
• Core services: Customer service, technical support, sales, finance and accounting, order management
• Specialization: BPO combined with IT and AI services

Contact Information

• Website: corpshore.co.uk
• Phone: +44 20 8106 1813
• Email: info@corpshore.co.uk
• Address: 71-75 Shelton Street, Covent Garden, London WC2H 9JQ, United Kingdom
• LinkedIn: www.linkedin.com/company/corpshore-solutions
• Facebook: www.facebook.com/corpshore
• Twitter: x.com/corpshore
• Instagram: www.instagram.com/corpshore

14. TMF Group

TMF Group helps international companies outsource accounting, tax compliance, payroll, HR administration, corporate secretarial work, and entity-management processes. Its London office at 1 Angel Court supports UK operations while the firm's international network is designed for organizations that need the same administrative framework across multiple jurisdictions.

For London businesses, TMF Group is most relevant when BPO requirements are tied to corporate compliance rather than customer contact. A multinational can use it to keep statutory, payroll, accounting, and entity obligations coordinated across markets, reducing the need to assemble separate local providers for each country.

Key Facts

• Best for: International companies outsourcing finance, payroll, and entity administration
• Core services: Accounting, tax compliance, payroll, HR administration, corporate secretarial services
• Specialization: Multi-country corporate administration and compliance
• Certification: ISO/IEC 27001:2022

Contact Information:

• Website: www.tmf-group.com
• Phone: +44 (0) 2078324900
• Address: 13th floor, 1 Angel Court, London, United Kingdom, EC2R 7HJ
• LinkedIn: www.linkedin.com/company/tmf-group

Conclusion

Business process outsourcing in London increasingly sits at the intersection of operations, technology, and specialist domain knowledge. Cost still matters, but buyers also need to examine process ownership, security, regulatory experience, integration with existing systems, and the provider's ability to improve a workflow after transition. AI and automation are becoming part of routine service delivery, yet the strongest operating models still depend on clear governance, measurable service levels, and skilled human teams. London remains useful as a commercial and governance hub even when much of the delivery takes place elsewhere. The right outsourcing structure should therefore match the complexity of the process, the amount of local oversight required, and how quickly the operating model is expected to change.