- Companies
- Specialist contractors
- Wallasey
- RB Mechanical Services Ltd
RB Mechanical Services Ltd
- Company number
- 15309737
- Incorporated
- 27 Nov 20232 years trading
- Registered office
- The Old School, 188 Liscard Road, Wallasey, CH44 5TN
- Nature of business
- Other specialised construction activities n.e.c.
RB Mechanical Services Ltd is a 2-year-old private limited company registered in Wallasey, company number 15309737, one of 16 specialist construction companies in Wallasey. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £147K (+65.9%) on the year before, to £370K.
- Current assets of £955K against £603K owed within a year: 1.6 times cover.
- 7 employees on average, up from 6 the year before.
- Balance sheets on record for 3 years, 2024 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Jun 2026 | £370K | £252K | £955K | £603K | 7 |
| 30 Jun 2025 | £223K | £135K | £535K | £335K | 6 |
| 30 Jun 2024 | £63K | £67K | £551K | £513K | 6 |
Public contracts won
RB Mechanical Services Ltd has 2 public sector contract awards on record; the ones with their own published value total £314K, from 2024 to 2025. Source: Contracts Finder and Find a Tender award notices. 1 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- NHS Property Services Limited1 award
- NHS Property Services Limited1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| NHS Property Services Limited | Boiler Replacement at Morecambe Health Centre | £237K | 21 Aug 2025 |
| NHS Property Services Limited | Boiler Replacement & Underfloor Heating Remedial Works at Ashton Green Clinic | £78K | 10 Oct 2024 |
Where RB Mechanical Services Ltd is registered
The registered office is in Wallasey (CH44), in the Wirral local authority area, North West. Show CH44 5TN on a map.
Other trade companies in CH44
- Clean-Espace LtdCleaning companies
- D M Window Repairs LtdRepair services
- NW Recovery & Auto Trade LtdMotor traders
- Lyndon Automotive LimitedMechanics and garages
- Odwyer and Sons Construction LtdBuilders
- JMS Property (Leeds) LtdProperty developers
- Evolved Property Services LtdPlumbers and heating engineers
- Pureflo Plumbing Solutions LtdPlumbers and heating engineers
Also registered at this address
3 other companies use the same registered office as RB Mechanical Services Ltd.
- Concrete Sports LimitedInstallers
- M C Bresnen LimitedCleaning companies
- Safeflow Ventilation LtdCleaning companies
What happens if RB Mechanical Services Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 March 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2028 to 30 Apr 2028 | £150 |
| 1 to 3 months late | 1 May 2028 to 30 Jun 2028 | £375 |
| 3 to 6 months late | 1 Jul 2028 to 30 Sep 2028 | £750 |
| More than 6 months late | From 1 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2028 | £200 |
| 3 months late | 30 Sep 2028 | another £200 |
| 6 months late | 30 Dec 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 2029 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 15309737
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 November 2023 (2 years ago)
- Registered office
- The Old School, 188 Liscard Road, Wallasey, CH44 5TN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2026
- Last confirmation statement
- 26 November 2025
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Wallasey
Other active specialist construction companies registered in Wallasey.
- RM Rope Access Ltd2026
- Russell Electrical Engineering Design Services Limited2007
- SPD Eco Services Ltd2025
- Straight Line Structural Repair Specialist Ltd.2003
- Tommy Clucas Site Services Ltd2017
- Visyon Partners Ltd2025
- William Mordecai Construction Services Limited2026
- Bell Mobility NW Ltd2013
All specialist construction companies in Wallasey · All trades in Wallasey · Specialist contractors across the UK
Frequently asked questions
When are RB Mechanical Services Ltd's accounts due?
RB Mechanical Services Ltd's next accounts are due at Companies House by 31 March 2028 (in 536 days), covering the period to 30 June 2027.
When is RB Mechanical Services Ltd's CT600 due?
The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.
Is RB Mechanical Services Ltd still trading?
RB Mechanical Services Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does RB Mechanical Services Ltd do?
RB Mechanical Services Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is RB Mechanical Services Ltd?
RB Mechanical Services Ltd was incorporated on 27 November 2023, 2 years ago.
Has RB Mechanical Services Ltd won public sector contracts?
Yes. RB Mechanical Services Ltd has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £314K), most recently from NHS Property Services Limited.
What is the penalty if RB Mechanical Services Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View RB Mechanical Services Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.