STRUCTURAL DESIGN BUREAU LTD
Company number 07544799 · Active · Worcester Park KT4 8XD
STRUCTURAL DESIGN BUREAU LTD is an active private limited company (company number 07544799) incorporated on 28 February 2011, registered in Worcester Park. Its registered activity is engineering related scientific and technical consulting activities (SIC 71122). Latest micro accounts cover the period ending 31 March 2026, showing net assets of £134k, with 7 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 24% on the prior period (£108k). Across the last 3 periods on record the net-asset trend is volatile.
By net assets it sits in the top quarter of 1,082 comparable companies in Greater London (median £6,876, upper quartile £40k).
Key dates
- Incorporated
- 28 February 2011
- Next accounts due
- 31 December 2027 — in 435 days
- Confirmation statement due
- 14 March 2027 — in 143 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 71122
- Engineering related scientific and technical consulting activities
- Accounts type
- Micro Entity
- Size band
- Micro (Companies Act thresholds)
Financials — 3 periods on record, latest ending 31 March 2026
| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2026 | £134k | — | — | — | — | — | 7 |
| 31 March 2025 | £108k | — | — | — | — | — | 5 |
| 31 March 2024 | £198k | — | — | — | — | — | 5 |
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing; micro-entity accounts contain no profit and loss account.
Firmoscan score: 81/100 (grade A)
- +10 Positive net assets — Net assets £133,923 at 2026-03-31
- +8 Net assets growing — +23.8% vs prior period
- +5 Multi-year filing history — 3 periods on record
- +8 Established — Incorporated 2011-02-28 (16 years)
A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice.
Ownership and control
- Mr Ben Veera Karunasekera — owns 25–50% of shares · since 21 January 2025
- Mrs Manuela Karunasekera — owns 25–50% of shares · since 21 January 2025
- Mr Ben Veera Karunasekera — has significant influence or control · since 6 April 2016 · ceased 12 April 2017
- Sdb Uk Holdings Ltd (corporate entity, United Kingdom) — owns 75–100% of shares · since 12 April 2017 · ceased 20 January 2025
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
Similar companies in Greater London
Same activity (engineering related scientific and technical consulting activities), closest in incorporation date.
- CENTIGRADE FIRE CONSULTANTS LIMITED — Dartford, inc. Mar 2011
- TMC MANAGEMENT CONSULTING LIMITED — Watford, inc. Feb 2011
- WSS ENGINEERING SOLUTIONS LIMITED — Watford, inc. Mar 2011
- ZVIKOM LTD — Egham, inc. Feb 2011
- B ALL ONE CONSULTING LIMITED — Enfield, inc. Mar 2011
- FLOW ASSURED LIMITED — Kingston Upon Thames, inc. Apr 2011
All companies incorporated on 28 February 2011 · in Feb 2011.
Reminders for STRUCTURAL DESIGN BUREAU LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.