Top BPO Service Companies in London

Between them, the 13 BPO service companies on this page cover business services (3), legal (3), medical (3) and b2b lead generation (2). 13 of them have written a profile you can read before you get in touch.

1. 1

   

   Blue Umbrella

   Blue Umbrella, styled blueumbrella, is a virtual assistant agency based in London that has run since 2001.

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   Why #1: Based in London, United Kingdom · Founded 2001, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

2. 2

   

   CALLCARE

   Business Services · Real Estate · Information Technology

   CALLCARE, also written CallCare, is a UK outsourced contact centre that answers calls and handles customer contact for other organisations around the clock.

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   Why #2: Address in London · ISO 27001, professional accreditation, as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   Emilia Powell

   Emilia Powell is a virtual assistant business serving small and medium-sized companies in London. Its assistants work remotely and are matched to each client.

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   Why #3: Based in London, UK · Founded 2017, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

4. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
5. –

   

   Doshi Outsourcing

   Legal · Outsourcing · Security · Also in Gujarat, India

   Doshi Outsourcing takes on the back office of UK accountancy practices and small businesses, with the work carried out by a team based in India.

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   On record: In business 20+ years, as stated on its own website, read 29 Sept 2026

6. –

   

   Absolute VA

   Absolute VA is a virtual assistant service based in and around London, run by Kirsty Bucknell.

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   On record: Based in London, England

7. –

   

   Answering Service London

   Cloud · Outsourcing · Also in Australia

   Answering Service London provides telephone receptionists based in London who answer calls in a client's company name.

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   On record: Based in London, United Kingdom

8. –

   

   Construction Marketing Experts

   Construction Marketing Experts, often shortened to CME, is a marketing consultancy that works only with firms in the built environment.

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   On record: Based in London and the Midlands, UK

9. –

   

   Curral

   B2B Lead Generation · Business Services · Lead Generation

   Curral is an outsourced sales development agency headquartered in the City of London.

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   On record: Based in London, with teams in Dubai and Miami

10. –

    

    Designated

    London remote business support firm providing marketing, virtual assistants, accountancy and HR help to small businesses

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    On record: Based in London, England

11. –

    

    Go Answer

    Business Services · Real Estate · Financial Services · Also in North America

    Go Answer provides live telephone answering and chat support that businesses can switch on instead of voicemail.

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12. –

    

    GSA Business Development

    B2B Lead Generation · Lead Generation · front

    GSA Business Development is a telemarketing and lead generation company serving businesses in the United Kingdom and abroad.

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    On record: Address in London

13. –

    

    Ilford Business Centre

    Cloud · Queries · Security · Also in Ilford

    Ilford Business Centre, known as IBC, is a workspace provider in Ilford, east London.

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    On record: Based in Ilford, London, UK

14. –

    

    InoVA Local

    InoVA Local supplies remote administrative staff to local service businesses, especially cleaning and other home service companies.

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