Verified AccountantsUK firms, verified against the public record

Ratio Business Services Limited

Chartered Accountants in Oaklands, Welwyn AL6

Verified & RegulatedTrust Score91/100Excellent

Companies House: 0475392810 Mardley Hill, Oaklands, Welwyn, AL6 0TNData updated 07 Jul 2026

Verified Accountants assessment

Ratio Business Services Limited is a UK limited company based in Welwyn, incorporated in 2003 and trading for 23 years.

Public records confirm it is anti-money-laundering supervised by ICAEW, a member firm of ICAEW, and up to date with its accounts (last filed 31 Mar 2025).

We have not yet confirmed a website for this firm. We add these once we can verify a firm's own website, and if this is your practice you can complete its listing.

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Verification record and Trust Score

91/100

Trust Score

Excellent
Public record
AML supervised · ICAEW
Active company
Filing compliant
Trading 23 years
Professional qualification
  • ICAEW
  • ACCA
  • AAT
Contact
Website
Phone
Emailn/a

The Trust Score is the share of the applicable public signals we have verified, scored out of 100 - fully deterministic, never subjective. How it is scored, and every signal's points →

Companies HouseActiveno. 04753928 (opens in new tab)incorporated 2003Companies House · checked 07 Jul
Registered activity
  • SIC 69201 - Accounting and auditing
The business activity the firm registered with Companies House (its Standard Industrial Classification).Companies House · checked 07 Jul
Filing complianceAccounts and confirmation statement filed on timelast accounts 31 Mar 2025 (opens in new tab)Companies House · checked 07 Jul
Professional bodyMember firm of ICAEWInstitute of Chartered Accountants in England and Wales (ICAEW) is a UK professional accountancy body. Member firms must meet its qualification and conduct standards and can be disciplined by it.ICAEW · checked 20 Jul
Anti-money-launderingSupervised by ICAEWICAEW is one of the professional bodies approved to supervise accountants for anti-money-laundering. Every UK accountant must be supervised, by HMRC or an approved professional body, so this confirms the firm is monitored and operating legitimately.ICAEW · checked 20 Jul
Sources: Companies House (opens in new tab), ICAEW
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People at Ratio Business Services Limited

Persons with significant control (2)

  • Siobhan Elizabeth PurvisOwns 25-50% of shares
  • Mr Graeme PurvisOwns 25-50% of shares

Source: Companies House register (opens in new tab).

Timeline

  1. 2003Company incorporated
  2. 2025Latest accounts filed
  3. 2026Verified on this directory

Frequently asked questions

Is Ratio Business Services Limited a regulated accountant?

Yes. Ratio Business Services Limited is a member firm of ICAEW, and is supervised for anti-money-laundering by ICAEW. Every UK accountant must be supervised for anti-money-laundering, by HMRC or an approved professional body, so this confirms the firm is authorised to practise and monitored for compliance.

Is Ratio Business Services Limited a chartered accountant?

Yes. Ratio Business Services Limited is a member firm of ICAEW, so it can use the title Chartered Accountants. "Chartered" and "Chartered Certified" are legally protected UK terms that only members of these bodies may use.

How long has Ratio Business Services Limited been established?

Ratio Business Services Limited was incorporated at Companies House in 2003, so it has been on the register for about 23 years. A longer trading history is one sign of an established, accountable firm, though a newer firm is not necessarily less capable.

Does Ratio Business Services Limited file its accounts on time?

Yes. According to Companies House, Ratio Business Services Limited's most recent statutory accounts were filed by their due date. On-time filing is a basic sign that a company is being administered properly.

How do you verify Ratio Business Services Limited?

We build this record only from public, authoritative sources - for this firm, Companies House and ICAEW, and stamp every claim with its source and the date we last checked it. We show only what we can verify and say so plainly when we cannot. How we verify →

How is the Trust Score calculated?

The Trust Score is fully deterministic: fixed points for public, verified signals - an active company, anti-money-laundering supervision, filing compliance, a confirmed website and trading history. Ratio Business Services Limited scores 91/100. Nothing in the score is subjective, and every rule is listed on this page. How we verify →

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