Filing status
- Accounts due
- 30 September 2027
- Last accounts
- 31 December 2025
- Conf. stmt due
- 23 March 2027
- Last conf. stmt
- 9 March 2026
On Tower UK 3 Limited
- Incorporated
- 28 February 1994 (32 years)
- Previously known as
- Arqiva No 4 Limited (until 16 July 2020)National Grid Wireless No 4 Limited (until 22 September 2008)Crown Castle Communications Limited (until 10 October 2005)Earlier: Millennium Communications Limited
- Industry
- Other service activities n.e.c. (96090)
- Directors
- Owned by
- Accounts type
- Audit exemption subsidiary
- Region
- South East
- Address
- R+4th Floor2 Blagrave StreetReadingRG1 1AZ
Charges
- Total
- 11
- Outstanding
- 0
- Part satisfied
- 0
- Satisfied
- 11
Officers 6 active
Officer details are public data from the Companies House register.
Director · Appointed 13 October 2026
British
Born February 1974 (52)
Director · Appointed 4 August 2026
Portuguese
Born May 1983 (43)
Director · Appointed 31 July 2026
Portuguese
Born April 1972 (54)
Director · Appointed 16 October 2025
British
Born February 1969 (57)
Director · Appointed 30 June 2025
Brazilian
Born May 1996 (30)
Whitaker, Rachael
Secretary · Appointed 10 November 2023
Officer history (42 former)
13 October 2026
4 August 2026
31 July 2026
31 May 2026
1 May 2026
Resigned Landolina, Gianluca as Director
22 October 2025
16 October 2025
16 October 2025
30 June 2025
25 February 2025
31 January 2024
Resigned Alvarez Villamarin, Alfonso Juan as Director
14 November 2023
14 November 2023
Appointed Landolina, Gianluca as Director
14 November 2023
14 November 2023
10 November 2023
Appointed Whitaker, Rachael as Secretary
31 January 2023
Appointed Alvarez Villamarin, Alfonso Juan as Director
31 January 2023
8 July 2020
8 July 2020
8 July 2020
8 July 2020
8 July 2020
Resigned Mavor, Jeremy as Secretary
20 April 2020
20 April 2020
15 May 2019
15 May 2019
25 March 2019
25 March 2019
1 January 2018
Appointed Mavor, Jeremy as Secretary
1 January 2018
11 January 2017
3 January 2017
1 June 2016
1 June 2016
1 August 2015
1 August 2015
15 July 2011
15 July 2011
28 January 2011
28 January 2011
15 December 2010
15 December 2010
5 August 2009
31 July 2009
31 July 2009
3 September 2008
3 September 2008
3 September 2008
3 September 2008
3 September 2008
3 September 2008
3 April 2007
3 April 2007
3 April 2007
3 April 2007
3 April 2007
3 January 2006
3 January 2006
30 November 2005
31 August 2004
28 January 2002
14 January 2002
14 January 2002
31 December 2001
13 September 2001
13 September 2001
18 May 2000
18 May 2000
20 December 1999
20 December 1999
1 December 1999
1 December 1999
20 July 1999
20 July 1999
8 October 1998
8 October 1998
Resigned Barlow, John as Secretary
8 October 1998
8 October 1998
8 October 1998
8 October 1998
8 October 1998
8 October 1998
Resigned Allen, John as Director
8 October 1998
Resigned Allen, James Anthony as Director
8 October 1998
28 February 1994
Appointed Barlow, John as Secretary
28 February 1994
Appointed Allen, James Anthony as Director
28 February 1994
28 February 1994
Appointed Allen, John as Director
28 February 1994
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Corporate entity · Notified 6 April 2016
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Limited By Shares
Reg. no. 3196207
Group structure 16 companies
Ownership group derived from the Companies House PSC register
Cellnex UK In-Building Solutions Limited Owns 75–100% of shares
Cellnex UK Midco Limited Owns 75–100% of shares
Cellnex Connectivity Solutions Limited Owns 75–100% of shares
Cellnex Newco 3 Limited Owns 75–100% of shares
Cellnex UK Consulting Limited Owns 75–100% of shares
Radiosite Limited Owns 75–100% of shares
Watersite Limited Owns 75–100% of shares
Cignal Infrastructure UK Limited Owns 75–100% of shares
On Tower UK Limited Owns 75–100% of shares
On Tower UK 1 Limited Owns 75–100% of shares
On Tower UK 2 Limited Owns 75–100% of shares
On Tower UK 3 Limited This company Owns 75–100% of shares
On Tower UK 4 Limited Owns 75–100% of shares
On Tower UK 5 Limited Owns 75–100% of shares
QS4 Holdings Limited Owns 75–100% of shares
Financials
Figures from 2021 accounts. Newer accounts, made up to 31 December 2025, are filed but not read yet. See them on Companies House
- Net Assets
- £2,500,100
- no change
Trend
Net Assets
Balance sheet detail
| 2021 | 2020 | 2020 | |
|---|---|---|---|
| Net Assets | £2,500,100 | £2,500,100 | £2,500,100 |
| Shareholder Funds | £2,500,100 | £2,500,100 | £2,500,100 |
Filings
Recent filings only. See the full history on Companies House
| Date | Description | Made Up To | Pages | |
|---|---|---|---|---|
| 12 August 2026 | Appointment of a director | |||
| 12 August 2026 | Appointment of a director | |||
| 2 June 2026 | Termination of appointment of a director | |||
| 17 May 2026 | Other filing | |||
| 17 May 2026 | Audit exemption subsidiary accounts | 31 December 2025 |
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