How many employees does Thornton Tomasetti Romsey Limited have?

Thornton Tomasetti Romsey Limited reported an average of 28 employees in the year to 31 Dec 2025.

Is Thornton Tomasetti Romsey Limited profitable?

Yes — Thornton Tomasetti Romsey Limited reported a profit of £926k in the year to 31 Dec 2025.

Company No. 01202925 · Incorporated 7 Mar 1975

Thornton Tomasetti Romsey Limited

Registered name: THORNTON TOMASETTI ROMSEY LIMITED

Part of Thornton Tomasetti Holdings UK Ltd group

Thornton Tomasetti Romsey Limited made £926k profit in the year to 31 Dec 2025 (revenue not disclosed).

Thornton Tomasetti Romsey Limited reported £926k profit in the year to 31 Dec 2025, up 148% on the year before; its revenue was not disclosed. It had 28 employees. The company is classified under “engineering related scientific and technical consulting activities” and is based in Romsey; we hold 4 years of its filed accounts.

Profit onlySection M · Professional, scientific and technical activitiesSIC 71122Engineering related scientific and technical consulting activities

Status: Active
Location: Romsey, South East
Age: 51 yrs · since 1975
Type: Private Limited Company

Part of a group. The filing indicates this company sits within a group structure, so its results may depend on intra-group trading and it may be hard to replicate independently. From the filing: “The company is wholly owned by Thornton Tomasetti Holdings UK Limited. This is the smallest group to consolidate the company's financial statements. The ultimate parent company is Thornton Tomasetti, ”

Latest accounts · year to 31 Dec 2025

Key figures

Revenue

—

Not disclosed in filing

Profit

£926k

Growth ▲148.1%

Profit margin

—

Employees

Change ▼3.5%

Profit / employee

£33.1k

Profitable streak

4yrs

Consecutive profitable years in our data

This company published its profit but not its turnover, so revenue and margins are not disclosed. We never estimate them.

Badges are automated estimates derived from the filed figures — not statements of fact about the company.

4 filed years

Financial history

Multi-year financials, oldest to newest
Year to	31 Dec 2022	31 Dec 2023	31 Dec 2024	31 Dec 2025
Disclosure	Profit only	Profit only	Profit only	Profit only
Profit & loss
Revenue (turnover)	—	—	—	—
Profit after tax	£1.2m	£646k	£373k	£926k
Profit (best available)	£1.2m	£646k	£373k	£926k
Employees (average)	—	28	29	28
Ratios
Profit margin	—	—	—	—
Profit per employee	—	£23.1k	£12.9k	£33.1k
Growth (year on year)
Profit growth	—	▼47.8%	▼42.2%	▲148.1%
Headcount growth	—	—	▲3.6%	▼3.5%
Balance sheet — indirect signals, not revenue
Cash at bank	£343k	£298k	£308k	£670k
Net assets	£6.4m	£7m	£7.4m	£8.3m
Fixed assets	£65.8k	£219k	£203k	£164k
Current assets	£7.4m	£8.3m	£8.5m	£10.8m
Debtors	£1.2m	£1.1m	£1m	£1.4m
Source	FullAccounts · bulk data Jul 2024	FullAccounts · bulk data Jul 2024	FullAccounts · bulk data Sep 2025	FullAccounts · bulk data Jul 2026

Derived from the latest filing

How the business works

Profit margin: —; Profit ÷ revenue.
Gross margin: —; Gross profit ÷ revenue. High for software and services.
Revenue per employee: —; Revenue ÷ average employees.
Profit per employee: £33.1k; Profit ÷ average employees.
Cash conversion: —; Cash generated from operations ÷ operating profit. Needs a cash-flow statement.
Fixed assets ÷ revenue: —; Capital intensity. Low = capital-light, cheaper to start.
Deferred income ÷ revenue: —; Customers paying upfront (subscriptions, deposits). Approximate when combined with accruals.
Debtors ÷ revenue: —; Money owed by customers. Low = customers pay quickly.

Indirect — not revenue

Balance-sheet signals

Year-on-year changes in filed balance-sheet items. They can hint at momentum (or investment) but are not revenue or profit and must not be read as such.

Net assets: ▲13%; Now £8.3m
Cash at bank: ▲118%; Now £670k
Headcount: ▼3%; Now 28
Deferred income: —; Now —
Fixed assets: ▼19%; Now £164k

Corporate ownership

Group structure

Ownership chain

Thornton Tomasetti Holdings UK Ltdultimate parent75–100%
Thornton Tomasetti Romsey Limitedthis company

Bands show the share of ownership each company holds in the one below it.

Sister companies (1)

Thornton Tomasetti Warrington LimitedRev. — · Profit −£30.8k

From the Persons with Significant Control register (corporate controllers only).

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Sources

Companies House profile Filing history & original accounts

Latest figures from FullAccounts for the year to 31 Dec 2025 (profit £926k), from the Companies House accounts bulk data published Jul 2026. Spotted an error? Request a correction.

Contains public sector information from Companies House licensed under the Open Government Licence v3.0. Data from Companies House, © Crown copyright. View the licence.