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Quantum Data Energy plc

ActiveCompany number 12886458Public limited companyEst. 202035110 · Production of electricityCity and County of the City of London, London
Official record ↗
Age6 years
older than 41% of its sector
Same activity, United Kingdom11,006live companies · 6540th oldest
In City and County of the City of London64,110live companies · 1,094 in the same activity
At this address205live companies incl. this one
Latest accounts2025group accounts, made up to 31 Dec 2025

In brief

Quantum Data Energy plc is a public limited company incorporated in England and Wales on 17 September 2020. It is 6 years old; 59% of the 11,006 live companies whose main activity is production of electricity are older. Its registered office is in City and County of the City of London, City of London, London, at an address shared with 204 other live companies. 1,094 live companies in City and County of the City of London share the same main activity. Its latest accounts were made up to 31 December 2025 and filed as group accounts. It was previously called Mast Energy Developments plc, a name it changed on 3 November 2025.

Register details

Registered nameQUANTUM DATA ENERGY PLC
Company number12886458
Company typePublic Limited Company
Registered office6TH Floor, 99 Gresham Street, EC2V 7NG London
JurisdictionEngland and Wales
Nature of business (UK SIC 2007)35110 Production of electricity
International sector (ISIC Rev.4)D · 35 Electricity, gas, steam and air conditioning supply

Timeline

Register events, newest first.

  • Confirmation statement made up
  • Accounts made upGroup accounts
  • Name changedPreviously Mast Energy Developments plc
  • Incorporated

Filings and charges

Deadlines and charge counts from the register.

Next accounts due30 June 2027
Accounting reference date31 December
Next confirmation statement9 July 2027
Last confirmation statement25 June 2026
Charges registered0
Outstanding · satisfied0 · 0

Charges are security interests (such as mortgages) registered against the company.

Production of electricity in the United Kingdom

Live companies whose main activity is 35110: 11,006 in total, median age 8 years, 518 incorporated in the past 12 months.

All 11,006 companies
This company's decadeOther decades
02,0004,0006,0008,0001910s: 11910s1920s: 11920s1930s: 11930s1940s: 11940s1950s: 41950s1960s: 41960s1970s: 71970s1980s: 281980s1990s: 2021990s2000s: 6362000s2010s: 5,2932010s2020s: 4,8282020s
Incorporated per year, still live
02505007501,0002011: 51420112012: 6032013: 78720132014: 8292015: 74020152016: 4582017: 36220172018: 3232019: 42920192020: 5902021: 68820212022: 8762023: 89620232024: 7072025: 65620252026: 415

Location

Registered office in City and County of the City of London, City of London, London.

City and County of the City of London
Live companies in City and County of the City of London64,110
Same activity in City and County of the City of London1,094
Live companies in City of London65,207
New in City and County of the City of London, past 12 months4,148

Also registered at this address

204 other live companies share this registered office; shown are those incorporated closest in time to this one.

Similar companies

Live companies with the same main activity, nearest first.

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Secgen Holdco LimitedCity and County of the City of London, London
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SB
Secgen Bidco LimitedCity and County of the City of London, London
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OF
Oaklands Farm Solar LimitedCamden, London
Number 12915335Est. 2020
LL
Loch Liath Wind Farm LimitedCity and County of the City of London, London
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GREENGRIDPOWER1 LtdCity and County of the City of London, London
Number 12831353Est. 2020

Sources

Register data: Companies House, Free Company Data Product, delivery of 1 October 2026. Places: ONS Postcode Directory (Open Government Licence v3.0). Sector names: Eurostat NACE Rev. 2. Context figures are computed by FirmsDB from these sources. This page is not an official register; check the official record before relying on it.