- Companies
- Property developers
- London
- Cityside UK Ltd
Cityside UK Ltd
- Company number
- 12666049
- Incorporated
- 12 Jun 20206 years trading
- Registered office
- 20-22 Wenlock Road, London, N1 7GU
- Nature of business
- Development of building projects
Cityside UK Ltd is a 6-year-old private limited company registered in London, company number 12666049, one of 14,100 property development companies in London. Its next accounts are due at Companies House on 30 May 2027, and the CT600 for the period to 30 August 2026 is due at HMRC on 30 August 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Cityside UK LtdOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
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 down £209K (-132.2%) on the year before, to -£366K.
- Net assets rose in 0 of 4 year-on-year comparisons on record.
- Current assets of £831K against £1.2M owed within a year: 0.7 times cover.
- 2 employees on average, up from 0 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2025 | -£366K | £25K | £831K | £1.2M | 2 |
| 31 Aug 2024 | -£158K | £296K | £451K | 0 | |
| 31 Aug 2023 | -£45K | £245K | £288K | 0 | |
| 30 Jun 2022 | -£800 | £25K | £25K | £26K | 2 |
| 30 Jun 2021 | £1 |
Where Cityside UK Ltd is registered
The registered office is in London (N1), in the Hackney local authority area, London. Show N1 7GU on a map.
Other trade companies in N1
- Tagwise LtdSpecialist contractors
- Sphere Aviation Solutions UK LtdMachinery repair and installation
- Get IT Done Builders LtdJoiners and carpenters
- Evolution Products LimitedMotor traders
- Fleetstone Trading LtdMotor traders
- Kenneth Brady LtdElectricians
- UK Import Export LtdBuilders
- Magic Door Services LimitedMachinery repair and installation
Shared registered office
804 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Cityside UK 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 30 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 31 May 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 30 Aug 2027 | £375 |
| 3 to 6 months late | 31 Aug 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 31 Aug 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Aug 2028 | 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
- 12666049
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 June 2020 (6 years ago)
- Registered office
- 20-22 Wenlock Road, London, N1 7GU
- Nature of business
- Development of building projects (SIC 41100)
- Year end
- 30 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 9 July 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in London
Other active property development companies registered in London.
- Citywide Properties Limited1981
- Civil Developments Ltd2019
- CJ & Son Construction Ltd2018
- CJLT Group Ltd2026
- CJW International Ltd2017
- CKB Blackfen Freehold Limited2024
- CKB Blackfen Leasehold Limited2024
- CKB Main Road Limited2024
All property development companies in London · All trades in London · Property developers across the UK
Frequently asked questions
When are Cityside UK Ltd's accounts due?
Cityside UK Ltd's next accounts are due at Companies House by 30 May 2027 (in 229 days), covering the period to 30 August 2026.
When is Cityside UK Ltd's CT600 due?
The CT600 for the period to 30 August 2026 is due at HMRC by 30 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 31 May 2027.
Is Cityside UK Ltd still trading?
Cityside UK 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 Cityside UK Ltd do?
Cityside UK Ltd is registered under Development of building projects (SIC 41100).
How old is Cityside UK Ltd?
Cityside UK Ltd was incorporated on 12 June 2020, 6 years ago.
What is the penalty if Cityside UK 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 Cityside UK 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.