- Companies
- Specialist contractors
- Leeds
- Control System Realisation Limited
Control System Realisation Limited
- Company number
- 05485140
- Incorporated
- 20 Jun 200521 years trading
- Registered office
- Leigh House, 28-32 ST. Pauls Street, Leeds, West Yorkshire, LS1 2JT
- Nature of business
- Other specialised construction activities n.e.c.
Control System Realisation Limited is a 21-year-old private limited company registered in Leeds, company number 05485140, one of 356 specialist construction companies in Leeds. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 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 £57K (+35.9%) on the year before, to £217K.
- Net assets rose in 7 of 8 year-on-year comparisons on record.
- Current assets of £300K against £106K owed within a year: 2.8 times cover.
- 8 employees on average, down from 9 the year before.
- Balance sheets on record for 9 years, 2015 to 2023.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2023 | £217K | £300K | £106K | 8 | |
| 31 Mar 2022 | £160K | £143K | £183K | £51K | 9 |
| 31 Mar 2021 | £210K | £268K | £89K | 10 | |
| 31 Mar 2020 | £133K | £192K | £78K | 2 | |
| 31 Mar 2019 | £111K | £144K | £49K | ||
| 31 Mar 2018 | £103K | £135K | £51K | ||
| 31 Mar 2017 | £71K | £92K | £42K | ||
| 31 Mar 2016 | £35K | £30K | £66K | £50K | |
| 31 Mar 2015 | £22K | £23K | £57K | £51K |
Where Control System Realisation Limited is registered
The registered office is in Leeds (LS1), in the Leeds local authority area, Yorkshire and The Humber. Show LS1 2JT on a map.
Other trade companies in LS1
- Gridlink Infrastructure LtdCivil engineering
- Kleos Homes LtdBuilders
- Hillco Construction LtdBuilders
- Ironpeak Roofing Services LtdRoofers
- Anchorstone Construct LimitedBuilders
- Luxe Cleanings Services LtdCleaning companies
- Ajel Properties LimitedProperty developers
- The Crossing Group UK LtdCivil engineering
Also registered at this address
15 other companies use the same registered office as Control System Realisation Limited.
- Avanta Holdings LtdMotor traders
- Bennett’S Automotive Repair LtdMechanics and garages
- Casablanca Development Phase One LimitedProperty developers
- Konstruct Ne LimitedSpecialist contractors
- Lika Estates LimitedProperty developers
- MB Decor (Yorkshire) LimitedPainters and decorators
- NN1 Invest LimitedBuilders
- Oatlands Tyre & Motor Company LimitedMechanics and garages
- Phoenix Roofclad LimitedRoofers
- Resinfloorcoatingsuk.Com LimitedFloor and wall tilers
- Rural Construction LimitedProperty developers
- Ssad Developments LimitedProperty developers
- Taylor-Jones LimitedFinishing trades
- Terzetto LimitedFloor and wall tilers
- V & E Joiners LimitedJoiners and carpenters
What happens if Control System Realisation Limited 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 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 05485140
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 June 2005 (21 years ago)
- Registered office
- Leigh House, 28-32 ST. Pauls Street, Leeds, West Yorkshire, LS1 2JT
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 20 June 2026
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 Leeds
Other active specialist construction companies registered in Leeds.
- Cooper Electrical Design Services Ltd2011
- County Scaffolding Services Limited1987
- County Surfacing Contractors Ltd2025
- Coyne Property Maintenance Limited2012
- CT Joinery and Developments Ltd2022
- CT Surveys Limited2004
- D & C Plant Hire Limited2015
- D Penny and Sons Planthire .Haulage Ltd2014
All specialist construction companies in Leeds · All trades in Leeds · Specialist contractors across the UK
Frequently asked questions
When are Control System Realisation Limited's accounts due?
Control System Realisation Limited's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Control System Realisation Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Control System Realisation Limited still trading?
Control System Realisation Limited 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 Control System Realisation Limited do?
Control System Realisation Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Control System Realisation Limited?
Control System Realisation Limited was incorporated on 20 June 2005, 21 years ago.
What is the penalty if Control System Realisation Limited 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 Control System Realisation Limited 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.