Active10394405Private limited companyWaterlooville

SPECTRUM INFRASTRUCTURE LIMITED

Significant control: Michael Joe Blake (25–50%), Jenna Graham (25–50%)

Companies HouseCompanies House

From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms

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Registered activity: Other telecommunications activities (SIC 61900). We’re building product and service lists for UK companies. Get this one when it’s ready.

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01

Summary

Generated from filed data · no estimates

SPECTRUM INFRASTRUCTURE LIMITED is an active private limited company (company number 10394405) incorporated on 26 September 2016, registered in Waterlooville. Its registered activity is other telecommunications activities (SIC 61900). Latest small accounts cover the period ending 31 March 2026, showing net assets of £762 and cash of £74k, with 1 employee on average. Net assets rose 115% on the prior period (£354).

Peer position · net assets

By net assets it sits in the lower half of 103 comparable companies in Portsmouth (median £2,740, upper quartile £20k).

02

Ownership and control

2 active · 5 other
  • Mr Michael Joe Blake
    Individual · since 25 March 2021
    • owns 25–50% of shares
    • holds 25–50% of voting rights
    • can appoint or remove directors
  • Mrs Jenna Graham
    Individual · since 16 May 2024
    • owns 25–50% of shares
    • holds 25–50% of voting rights
    • can appoint or remove directors
  • Aerial Telephones Group Ltd
    corporate entity, Gb-Eng · since 26 September 2016 · ceased 1 October 2017
    • has significant influence or control
  • Mr Michael Joe Blake
    Individual · since 28 September 2018 · ceased 1 March 2019
    • owns 25–50% of shares
    • holds 25–50% of voting rights
    • can appoint or remove directors
  • Mr Liam Stuart Graham
    Individual · since 28 September 2018 · ceased 1 March 2019
    • owns 25–50% of shares
    • holds 25–50% of voting rights
    • can appoint or remove directors
  • persons with significant control statement · since 1 March 2019 · ceased 25 March 2021
  • Mr Liam Stuart Graham
    Individual · since 25 March 2021 · ceased 16 May 2024
    • owns 25–50% of shares
    • holds 25–50% of voting rights
    • can appoint or remove directors

Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.

03

Key dates

Incorporated
26 September 201610 yrs ago
Next accounts due
31 December 2027in 432 days
Confirmation statement due
10 October 2027in 350 days

Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.

04

Activity

SIC 61900
Other telecommunications activities
Accounts type
Total Exemption Full
Size band
MicroCompanies Act thresholds
05

Financials

2 periods on record · latest ending 31 March 2026
Net assets
£762
+115%vs Mar 2025
Cash at bank
£74k
−14%vs Mar 2025
Turnover
Not reported
Employees
1
No changevs Mar 2025
Net assets
£762
Cash at bank
£74k
Average employees
1
Filed accounts by period, newest first
Period endNet assetsCashDebtorsCreditors <1yTurnoverProfitEmployees
31 March 2026£762£74k£17k———1
31 March 2025£354£86k£0———1
Cash per employee£74kCash ÷ average employees

Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.

06

Filing and accounts signals

Facts from the register · no rating
  • Net assets above zeroNet assets £762 at 31 March 2026
  • Net assets up 10% or more on the prior period+115.3% vs prior period
  • Cash at bank of £50,000 or moreCash £73,840
  • Incorporated five or more years agoIncorporated 26 September 2016

Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.

07

Timeline

Newest first
  1. Next accounts duein 432 days
  2. Confirmation statement duein 350 days
  3. Accounts period endNet assets £762 · small accounts
  4. Accounts period endNet assets £354 · small accounts
  5. Incorporated
08

Similar companies in Portsmouth

Same activity (other telecommunications activities), closest in incorporation date
09

Reminders for SPECTRUM INFRASTRUCTURE LIMITED

Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.

Source: Companies House register, snapshot 2026-08-31; accounts from the Companies House accounts data product. Open Government Licence v3.0. View on Companies House. Methodology · About · Markdown.