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S3

S3Tax Limited

Birmingham
SME

S3Tax Limited specializes in providing tax support and training for the housing and third sectors, including charities and educational institutions. They focus on delivering tailored consultancy and subscription services to enhance financial efficiency and compliance.

s3tax.co.uk ↗

Summary from the supplier’s website — unverified

Compare peers
Awarded
£416k
Live
3
Buyers
3
12m
—
At a glance
  • Quick answer
Profile
  • Social value
  • ESG & policies
  • Capabilities1
  • Buyer references
  • Accreditations
Track record · verified
  • KPI performance
  • Contracts3 / 4
  • Top buyers3
  • Category mix
  • Geography
  • Peers5
Trust & risk
  • Red flags0
  • Compliance
  • Modifications
  • News
Company
  • Companies House
  • Financial
  • Org tree
Quick answer — S3Tax LimitedUpdated 20 Jul 2026

At a glance · for buyers and watchdogs

S3Tax Limited has won £416k across 3 public-sector buyers, with 3 live contracts. No active Companies House risk flags.

Why: top buyer Great Places Housing Group Limited at 94% · 0 active risk flags · 0 modifications.

Decision signals
0Active red flags
ActiveCompany status
3 of 4Live contracts
94%Top-buyer concentration
—Category exposure
0Contract modifications
If you're a buyer:CapabilitiesReferencesKPIComplianceWatchdog?FlagsModificationsConcentrationNews

Social value

Commitments mapped to the Government Social Value Model themes.

⚑ Self-reported
—

No social-value commitments yet

Jobs, skills, environmental, inequality and community commitments appear here once a claimed supplier attributes them to awarded contracts, or once we detect them on the supplier’s website.

ESG & policies vault · 0/5

Key governance & sustainability policies. Published documents link out; missing ones are greyed.

↔ Cross-checked
Net-zero planNot provided✓
Modern slavery statementNot provided✓
EDI policyNot provided✓
Anti-briberyNot provided✓
Data protectionNot provided✓

Capabilities

What this supplier does, where they sit, who they sell to.

◐ From website & notices
Sectors served · 3/8
Central government✓
Local government✓
NHS & health✓
Housing✓
Utilities & energy✓
Financial services✓
Education✓
Defence✓
Services · 3
ConsultancyExpert tax consultancy services tailored for the housing, education, and charity sectors. ↗Annual Subscription Services for Education ProvidersA comprehensive tax package designed to support educational institutions with annual reviews, bespoke training, and an all-taxes helpline. ↗Annual Subscription Services for Charities and Non-ProfitsCustomized tax support and training for charities and non-profits, including annual reviews and bespoke training. ↗
Frameworks & DPS · 1 from notices
  • Tax Advisory ServicesGreat Places Housing Group Limited · £389k

Extracted automatically from s3tax.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

Case studies

Delivery stories the supplier has published, with sector and outcome.

⚑ Self-reported
—

No case studies yet

Once a claimed supplier publishes delivery stories — the buyer, the sector, what was delivered and the outcome — they appear here.

Buyer references

Named public-sector contacts who have agreed to act as a reference.

✓ Confirmed by buyer
—

No buyer references yet

Public-sector buyers can confirm they'll act as a reference for this supplier. Confirmed references — with the contract they relate to — show here.

Accreditations & memberships · 1

Credentials listed on the supplier’s website. Not yet checked against issuer registers.

◐ From supplier website
Core credentials · 1/6
Cyber EssentialsNCSC ↗✓
Cyber Essentials PlusNot evidenced✓
ISO 27001 — Information securityNot evidenced✓
ISO 9001 — QualityNot evidenced✓
ISO 14001 — EnvironmentalNot evidenced✓
ISO 45001 — Health & safetyNot evidenced✓

Extracted automatically from s3tax.co.uk on Jul 2026. Not independently verified — treat as the supplier’s own marketing claims.

KPI performance

Delivery, budget and satisfaction scores reported quarterly by buyers.

✓ Verified
84

No verified KPI scores yet

Once buyers report contract KPIs — delivery on time, on budget, satisfaction, adoption and accessibility — a weighted grade and breakdown appear here.

Contracts · 3 live · 1 historic

Pulled from Contracts Finder & Find a Tender. Most recent first.

✓ From notices
TitleBuyerCPVAwardedValueTermStatus
Tax Advisory Services
Great Places Housing Group Limited7920000031 Mar 2025£389k4 yrsLive
Tax Consultancy Advice - AWARD
Raven Housing Trust Limited6617100001 Apr 2024£27k2 yrsClosed
Tax Advisory Services
Great Places Housing Group Limited79222000———Live
Tax Advisory Services
ACCENT HOUSING LIMITED————Live
Total live value £389k · mean award £104k

Top buyers · 3 buyers · top 3 = 100%

Share of awarded value. Concentration fires above 40% for any single buyer.

✓ From notices
1
Great Places Housing Group Limited
2 contracts
94%
since 2025
2
Raven Housing Trust Limited
1 contract
6%
since 2024
3
ACCENT HOUSING LIMITED
1 contract
0%

Geography

Distribution of awarded value by buyer region.

✓ From notices
UK · schematic only
North West2 contracts
94%
South East1 contract
6%
Yorkshire1 contract
0%

Peers

Suppliers with overlapping CPVs & buyers (last 24m). S3Tax Limited highlighted.

✓ From notices
SupplierSME?Awarded · 24mContracts
AT
Atos
No£474.4m1
DE
Deloitte LLP
Yes£8.0m4
TA
Tyne and Wear Pension Fund
Yes£7.9m2
E&
ERNST & YOUNG LLP
No£7.5m5
KP
KPMG LLP
Yes£7.3m19
S3
S3Tax Limited
Yes——
Compare peers →

Red flags · 0 active

Automated scan of Companies House status, charges and insolvency records.

✓ Verified
✓ Clean. No active risk signals from Companies House status, charges or insolvency records.

Compliance scorecard

Derived from Companies House filings — not a full supplier-assurance check.

↔ Cross-checked
Trading status
Active
Live at Companies House
Annual accounts
Up to date
Last made up to 31 Mar 2025
Confirmation statement
Up to date
Next due 06 Feb 2027
Outstanding charges
0
No charges registered
Insolvency history
None
No insolvency cases registered
Certifications (ISO, Cyber Essentials, Living Wage, B-Corp, modern-slavery) are supplier self-reported and appear once a claimed profile adds them.

Modifications

Variations to awarded contracts logged under Procurement Act 2023 s.74.

✓ From notices
±

No modifications recorded

No published contract variations for this supplier. Modification notices appear here as they are issued under the Procurement Act 2023.

News mentions

UK trade press & nationals, matched to this supplier.

◰

No news mentions found

We haven't matched any recent UK press coverage to this supplier. Mentions appear here automatically as they're published.

Companies House

Live sync — registered details, directors, PSC and SIC codes.

✓ Live sync

Registered details

Company no.
13882665
Status
Active
Type
Private limited
Incorporated
31 Jan 2022
Reg. office
2 Chamberlain Square, Paradise Circus, Birmingham, B3 3AX
SIC codes
69203
Last accounts
31 Mar 2025
Next accounts due
31 Dec 2026

Directors & PSC

  • LAMMERTSMA, Remy Adriaan — director
    Appointed 05 Jan 2026
  • FARMER, Roy Edward — director
    Appointed 16 Aug 2023
  • MCNEILLY, Richard Charles — director
    Appointed 16 Aug 2023
  • BURROWS, Nick — director
    Appointed 31 Jan 2022
  • FERGUSON, Angela — director
    Appointed 31 Jan 2022
  • Opto Group Limited — person with significant control
    ownership of shares 75 to 100 percent · voting rights 75 to 100 percent · right to appoint and remove directors

Financial

Filed accounts from Companies House.

↔ From Cos House
£

No financial filings on record

Turnover, profit and headcount appear here once audited or micro-entity accounts are filed at Companies House.

Org tree

Group structure and ownership.

↔ From Cos House
S3 TAX LIMITED
13882665 · this company

Independent. No parent company or subsidiaries recorded at Companies House for this entity.