Active11554941Private limited companyHenley-On-Thames

PRISMA ENERGY STORAGE LTD

Significant control: Innovatium Group Limited (75–100%)

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From public filings as at 31 Aug 2026; may contain errors or be out of date.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: Engineering design activities for industrial process and production (SIC 71121). 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

PRISMA ENERGY STORAGE LTD is an active private limited company (company number 11554941) incorporated on 5 September 2018, registered in Henley-On-Thames. Its registered activity is engineering design activities for industrial process and production (SIC 71121). Latest abridged accounts cover the period ending 31 December 2025, showing net assets of −£130k and cash of £1,213, with 1 employee on average. As abridged accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 1% on the prior period (−£129k).

Peer position · net assets

By net assets it sits in the bottom quarter of 115 comparable companies in Reading (median £13k, upper quartile £76k).

02

Ownership and control

1 active · 5 other
  • Innovatium Group Limited
    corporate entity, Scotland · since 21 April 2021
    • owns 75–100% of shares
    • holds 75–100% of voting rights
  • Innovatium Llp
    corporate entity, England & Wales · since 5 September 2018 · ceased 21 April 2021
    • has significant influence or control
  • Mr Simon Branch
    Individual · since 5 September 2018 · ceased 16 December 2021
    • has significant influence or control
  • Mr Craig Simon Harrison
    Individual · since 5 September 2018 · ceased 31 March 2019
    • has significant influence or control
  • Innovatium Holding Limited
    corporate entity, England & Wales · since 5 September 2018 · ceased 27 April 2021
    • owns 75–100% of shares
    • holds 75–100% of voting rights
    • can appoint or remove directors
  • Dr Adrian Alford
    Individual · since 5 September 2018 · ceased 16 December 2021
    • has significant influence or control

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
5 September 20188 yrs ago
Next accounts due
30 September 2027in 338 days
Confirmation statement due
19 September 2027in 327 days

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

04

Activity

SIC 71121
Engineering design activities for industrial process and production
SIC 71122
Engineering related scientific and technical consulting activities
SIC 71129
Other engineering activities
Accounts type
Unaudited Abridged
Size band
MicroCompanies Act thresholds
05

Financials

2 periods on record · latest ending 31 December 2025
Net assets
−£130k
vs Dec 2024
Cash at bank
£1,213
+3%vs Dec 2024
Turnover
Not disclosed
Employees
1
No changevs Dec 2024
Net assets
−£130k
Cash at bank
£1,213
Average employees
1
Filed accounts by period, newest first
Period endNet assetsCashDebtorsCreditors <1yTurnoverProfitEmployees
31 December 2025−£130k£1,213£52£132k——1
31 December 2024−£129k£1,173£35£118k——1
Current ratio0.01Current assets ÷ creditors within one year
Cash per employee£1,213Cash ÷ 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 below zeroNet assets £-130,355 at 31 December 2025
  • Current assets below creditors within one yearCurrent ratio 0.01
  • Incorporated five or more years agoIncorporated 5 September 2018

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 338 days
  2. Confirmation statement duein 327 days
  3. Accounts period endNet liabilities £130k · abridged accounts
  4. Accounts period endNet liabilities £129k · abridged accounts
  5. Incorporated
08

Similar companies in Reading

Same activity (engineering design activities for industrial process and production), closest in incorporation date
09

Reminders for PRISMA ENERGY STORAGE LTD

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. Contact us about this company.