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The Assurance Desk

RPC (Reynolds Porter Chamberlain LLP) review

Advisory firm

A London law firm, regulated by the Solicitors Regulation Authority, whose Data & Cyber team advises on data protection, regulatory investigations, cyber incidents and, it says, AI governance.

Relevant if you face a data breach or regulator's investigation and want a regulated law firm

Price Not published
Indemnity cover Not published
How it uses AI Not published
Facts last checked

Not published means we did not find it on the firm's own pages.

RPC scores

Six scores, each 1 to 5. The evidence for each is further down.

Help when things go wrong 3/5
Qualifications of the people who do the work 3/5
What it publishes about fees 2/5
Knowledge of your sector 4/5
Independence from what it sells 4/5
Who carries the risk if the advice is wrong 4/5

What RPC offers, and what it publishes

You get a regulated law firm with a named team. Jon Bartley, Richard Breavington and Rupert Cowper-Coles jointly head Data & Cyber. Legal 500 UK 2026 ranks the London practice Tier 2, and Chambers UK 2026 ranks the department Band 5. Chambers ranks Jon Bartley Band 4; he chairs the City of London Law Society's Data Law Committee.

RPC does not publish a price for data-protection or AI work. Its pricing statement appears to cover employment tribunal cases only. It does not publish its indemnity insurer or level of cover, client results, or any accreditation such as Cyber Essentials or ISO 27001.

As a regulated law firm, it must follow compulsory professional-indemnity insurance rules, and clients can take complaints to the Legal Ombudsman. We saw its AI-governance page only in search results. It has 4 Trustpilot reviews and a score of 2.6 out of 5. Two are by the same person, and Trustpilot says it does not fact-check reviews.

Strengths

  • Dedicated Data & Cyber practice with three named joint heads (Jon Bartley, Richard Breavington, Rupert Cowper-Coles), not a generalist team covering the area incidentally.
  • Individually ranked practitioner: Jon Bartley holds Chambers Band 4 and chairs the City of London Law Society's Data Law Committee.
  • Ranked in both major UK legal directories for this specific practice area, Legal 500 Tier 2 and Chambers UK Band 5.
  • SRA-regulated recognised body (since 1 November 2011), which brings mandatory professional indemnity insurance and Legal Ombudsman client recourse that unregulated consultancies do not carry.
  • Long-established firm (SRA-authorised, Companies House-registered LLP since 2006) with multiple offices, reducing single-point-of-failure risk.

Things to check

  • Legal 500 UK 2026 ranks RPC's data protection, privacy and cybersecurity practice in London as Tier 2, not the top tier of that ranking.
  • Chambers UK 2026 ranks RPC's Data Protection & Information Law department at Band 5 in its UK-wide table for that practice area.
  • No public fee range or rate card specific to data-protection or AI-governance advisory work could be found on RPC's own website.

Common questions

Is RPC regulated?

Yes. The Solicitors Regulation Authority has authorised it as a recognised body since 1 November 2011, under SRA number 440566.

Does RPC publish fees for data-protection or AI-governance work?

No. We found no fee range or rate card for this work on its website. Its pricing statement appears to cover employment tribunal work only.

How do the legal directories rank it?

Tier 2 and Band 5. Legal 500 UK 2026 ranks its London data protection, privacy and cybersecurity practice Tier 2; Chambers UK 2026 ranks the department Band 5 UK-wide. Both guides have higher grades.

Does RPC hold ISO 27001 or Cyber Essentials?

Not that it publishes. We found no Cyber Essentials, ISO 27001 or Lexcel accreditation on its website.

Evidence for each RPC score

Show our working

Notes behind each thing to check

  • Legal 500 UK 2026 ranks RPC's data protection, privacy and cybersecurity practice in London as Tier 2, not the top tier of that ranking. (Legal 500's own ranking page for this practice area and firm states the tier directly.)
  • Chambers UK 2026 ranks RPC's Data Protection & Information Law department at Band 5 in its UK-wide table for that practice area. (Chambers UK's own department ranking page for RPC states Band 5 directly.)
  • No public fee range or rate card specific to data-protection or AI-governance advisory work could be found on RPC's own website. (RPC's SRA-mandated pricing transparency statement, per search-indexed content, covers employment tribunal services, not this service line.)
Six criteria, each scored 1 to 5, with the evidence for each.
CriterionScoreEvidence
Help when things go wrong 3/5 Chambers UK 2026 ranks the data protection department Band 5; named partner Richard Breavington's stated expertise covers data breach response, regulatory investigations and cyber incident matters, per Chambers and RPC-linked profile pages.
Qualifications of the people who do the work 3/5 Legal 500 UK 2026 ranks RPC Tier 2, and Chambers UK 2026 ranks it Band 5, for data protection, privacy and cybersecurity, recognised but not top-tier in either guide.
What it publishes about fees 2/5 No published fee ranges, hourly rates or fee model found for data-protection or AI-governance advisory work specifically; RPC's SRA-mandated pricing transparency statement appears to cover employment tribunal services only.
Knowledge of your sector 4/5 Dedicated Data & Cyber practice with named joint heads Jon Bartley and Richard Breavington, each individually ranked in Chambers and/or Legal 500 for this exact specialism.
Independence from what it sells 4/5 RPC is a traditional SRA-regulated law firm billing for legal advice; no evidence found that it sells or bundles its own compliance software to clients.
Who carries the risk if the advice is wrong 4/5 SRA-regulated recognised body (SRA number 440566) since 1 November 2011, meaning mandatory professional indemnity insurance rules and Legal Ombudsman recourse apply to client work.

Sources for RPC

  • Reynolds Porter Chamberlain LLP is registered at Companies House with company number OC317402, incorporated 24 January 2006, status Active, as a Limited Liability Partnership, registered office Tower Bridge House, St Katharine's Way, London, E1W 1AA. (Companies House, checked 19 September 2026)
  • Reynolds Porter Chamberlain LLP is authorised and regulated by the Solicitors Regulation Authority as a recognised body, SRA number 440566, authorised since 1 November 2011 for all legal services including reserved legal activities, head office Tower Bridge House, London E1W 1AA. (SRA 440566) (sra.org.uk, checked 19 September 2026)
  • Legal 500 UK 2026 ranks RPC's Data protection, privacy and cybersecurity practice in London as Tier 2, describing the team as having 'an excellent and well-deserved reputation' in the data protection market. (legal500.com, checked 19 September 2026)
  • Chambers UK 2026 ranks RPC's Data Protection & Information Law department Band 5 UK-wide, and individually ranks partner Jon Bartley Band 4, noting he chairs the City of London Law Society's Data Law Committee. (Band 5 (dept), Band 4 (Jon Bartley)) (chambers.com, checked 19 September 2026)
  • Legal 500's lawyer profile for Jon Bartley lists him as a Partner at RPC, London, practising in Technology including data protection, cybersecurity, digital technology and e-commerce, with 20 years' experience as a commercial contracts lawyer. (Partner, 20 years' experience) (legal500.com, checked 19 September 2026)
  • Trustpilot: RPC's Trustpilot profile is claimed (since March 2025) but carries only 4 reviews and a 2.6/5 'Poor' TrustScore. Two of the four are the same named reviewer repeating unproven, one-sided allegations (not adjudicated by any court) that RPC's conduct for a client in an ongoing High Court claim amounts to a SLAPP; one is a 2025 complaint about slow KYC/onboarding turnaround; and one is a positive 2020 review naming an associate, Trustpilot itself states it does not fact-check reviews. (Trustpilot, checked 20 September 2026)

SRA-authorised recognised body, reference 440566, authorised since 1 November 2011 (stated on sra.org.uk register)

After a breach or ICO contactExposed to the EU AI ActAfter a ransomware or security incident

Where this firm appears

If you represent this firm and something here is wrong or out of date, email hello@theassurancedesk.com with the evidence.

This is an independent editorial guide, not legal advice.