What Reliance Cyber say about themselves
“Cyber security services, dedicated to safeguarding organisations by monitoring & managing digital infrastructure 24/7, protecting against cyber attacks.”
Reliance Cyber Limited
- Incorporated
- 7 October 2003 (23 years)
- Previously known as
- Reliance Acsn Limited (until 22 March 2023)Relianceacsn Limited (until 21 April 2017)Acsn Limited (until 29 June 2016)Earlier: Acsn Limited
- Industry
- Other business support service activities n.e.c. (82990)
- Directors
- Jennifer Maureen KalenderidisJames Michael ChappellAlexander James Hartley Martin
- Owned by
- Reliance Advanced Computer Systems & Networks Limited
- Accounts type
- Full
- Region
- Greater London
- Address
- 1 Valentine PlaceLondonSE1 8QH
Website & contact details
- Website
Filing status
- Accounts due
- 30 September 2027
- Last accounts
- 31 December 2025
- Conf. stmt due
- 15 October 2027
- Last conf. stmt
- 1 October 2026
Officers 4 active
Officer details are public data from the Companies House register.
Kalenderidis, Jennifer Maureen
Director · Appointed 10 June 2025
British
Born April 1966 (60)
Chappell, James Michael
Director · Appointed 14 November 2024
British
Born July 1974 (52)
Martin, Alexander James Hartley
Director · Appointed 14 November 2024
British
Born April 1986 (40)
Edger, Gillian
Secretary · Appointed 29 November 2019
Officer history (26 former)
5 January 2026
20 June 2025
Resigned Lee, James William as Director
18 June 2025
10 June 2025
Appointed Kalenderidis, Jennifer Maureen as Director
28 May 2025
Resigned Munro, Lawrence Robert William as Director
17 February 2025
Appointed Lee, James William as Director
14 November 2024
Appointed Chappell, James Michael as Director
14 November 2024
Appointed Martin, Alexander James Hartley as Director
21 October 2024
Appointed Munro, Lawrence Robert William as Director
30 June 2023
30 June 2023
30 June 2023
11 February 2022
11 February 2022
10 February 2022
10 February 2022
Resigned Ewers, Ian as Director
10 February 2022
10 February 2022
Resigned Tracey, Cheryl as Director
10 February 2022
Resigned Folliss, Tarquin Simon Archer as Director
10 February 2022
31 December 2021
Resigned Vann, Robin Alex as Director
18 February 2021
Resigned Ogle, Timothy Paul as Director
4 November 2020
Appointed Ogle, Timothy Paul as Director
4 November 2020
30 June 2020
Resigned Cooke, Andrew Derek as Director
16 March 2020
Appointed Vann, Robin Alex as Director
16 March 2020
Appointed Folliss, Tarquin Simon Archer as Director
16 March 2020
Appointed Cooke, Andrew Derek as Director
16 March 2020
16 March 2020
16 March 2020
Appointed Ewers, Ian as Director
16 March 2020
Appointed Tracey, Cheryl as Director
29 November 2019
Resigned Goddard, Yvonne as Secretary
29 November 2019
Appointed Edger, Gillian as Secretary
19 December 2018
Resigned Walker, Justin Mark as Director
30 April 2018
20 September 2017
31 August 2017
Resigned Clifford, Michael as Director
13 June 2017
Appointed Clifford, Michael as Director
11 June 2017
Appointed Walker, Justin Mark as Director
24 May 2017
16 November 2016
24 October 2016
Appointed Goddard, Yvonne as Secretary
5 May 2016
5 May 2016
5 May 2016
5 May 2016
Resigned Chin, Lorraine as Secretary
14 May 2012
14 May 2012
Appointed Chin, Lorraine as Secretary
16 October 2003
16 October 2003
16 October 2003
14 October 2003
14 October 2003
7 October 2003
7 October 2003
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Reliance Advanced Computer Systems & Networks Limited
Corporate entity · Notified 30 September 2016
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Has significant influence or control
Limited Company
Financials
Balance sheet as at 31 December 2025 · full accounts
- Net Assets
- (£23,733,479)
- Cash
- £997,355
- Profit Before Tax
- (£4,966,942)
- Debt Ratio
- 707%
- Current Ratio
- 0.7x
Trend
Net Assets
Balance sheet detail
| 2025 | 2024 | 2023 | 2022 | 2021 | 2019 | |
|---|---|---|---|---|---|---|
| Fixed Assets | £523,080 | £410,700 | £311,747 | £149,776 | £151,976 | £548,719 |
| Current Assets | £3,386,677 | £4,331,194 | £3,689,524 | £4,723,850 | £4,068,605 | £2,181,746 |
| Debtors | £2,389,322 | £2,756,033 | £2,876,337 | £3,418,741 | £2,381,660 | £1,813,696 |
| Cash | £997,355 | £761,074 | £813,187 | £1,305,109 | £1,686,945 | £368,050 |
| Creditors (< 1 year) | £4,864,028 | £8,837,080 | £6,145,388 | £4,731,878 | £17,555,545 | £11,928,989 |
| Creditors (> 1 year) | £22,779,208 | £14,704,208 | £14,704,208 | £14,704,208 | ||
| Net Current Assets | (£1,477,351) | (£4,505,886) | (£13,486,940) | (£9,747,243) | ||
| Net Assets | (£23,733,479) | (£18,799,394) | (£16,848,325) | (£14,562,460) | ||
| Shareholder Funds | (£23,733,479) | (£18,799,394) | (£16,848,325) | (£14,562,460) | (£13,334,964) | (£9,198,524) |
| Turnover | £10,922,231 | |||||
| Cost of Sales | £10,962,329 | £6,733,871 | £8,110,871 | |||
| Gross Profit | £2,811,360 | |||||
| Admin Expenses | £7,387,652 | £4,576,058 | £5,743,874 | |||
| Staff Costs | £6,094,256 | £7,400,574 | ||||
| Profit Before Tax | (£4,966,942) | (£2,622,496) | (£2,932,514) | |||
| Tax | £0 | (£671,427) | (£646,649) | |||
| Profit for Period | (£4,966,942) | (£1,951,069) | (£2,285,865) | (£1,227,496) | (£2,274,168) | (£3,739,891) |
Filings 156
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 2 October 2026 | Confirmation statement with updates | 1 October 2026 | ||
| 12 May 2026 | Full accounts | 31 December 2025 | ||
| 5 January 2026 | Termination of appointment of a director | |||
| 5 December 2025 | Current accounting period extended | |||
| 6 November 2025 | Memorandum and Articles of Association |
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