Quantum Blockchain Technologies plc
Quantum Blockchain Technologies PLC (QBT), formerly Clear Leisure PLC, is an AIM-listed UK investing company whose principal activity is an in-house R&D programme (Methods A, B and C, including the 'AI Oracle') aimed at improving Bitcoin mining efficiency through AI, software and hardware-led innovation, commercialised via relationships with ASIC manufacturers, mining rig producers and mining pools. In parallel it pursues monetisation of legacy investee/legacy-litigation assets, principally through its subsidiary Clear Leisure 2017 Limited (the Sipiem litigation) and a portfolio of minority stakes in unlisted companies. The Group generated no revenue in the year and reported a total comprehensive loss of €3,128,000.
FY2025 in sixty seconds
year to 31 Dec 2025 · approved 26 Jun 2026 · 80 pages · Companies House
Quantum Blockchain Technologies, a company developing artificial-intelligence tools to make Bitcoin mining cheaper and faster, earned no revenue in 2025, the same as in 2024. Its loss after tax widened to €3.1m from €2.9m.
The report puts the losses down to research spending with no sales yet to cover costs, and to higher professional and legal fees, which rose to €996,000 because of court cases and fundraising. One-off charges included writing off its stake in GeoSim Systems, which was wound up.
The company raised €2.4m from shareholders but ended the year with €451k in cash, down from €604k, against borrowings of €7.8m. No dividend is proposed. Management says the company is moving from laboratory work to live testing with mining-equipment makers, and the directors believe it is significantly closer to showing its technology works commercially. However, the directors and the auditor flag a serious doubt over whether it can keep going without more outside funding. The auditor also gave a qualified opinion, meaning it had a reservation, because it lacked enough evidence on the GeoSim investment's value.
No revenue generated in the year; business is pre-commercialisation R&D plus legacy asset recovery
The Group has not generated a material level of income and has no major customers
page 54Research and development spend increased to €1,021,000 (2024: €917,000)
Expenses by nature note
page 55QBT has entered an important new phase, moving from laboratory development towards live testing, software porting, hardware integration and commercial engagement with industry participants; the software-only implementation of Method C could represent a transformative opportunity by enabling faster and broader adoption of QBT's technology across existing Bitcoin mining infrastructure
page 5No distributable reserves; Directors are not recommending the payment of a dividend
page 1411 years on one page · FY2015–FY2025
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EUR millions, negatives in brackets. Per-share lines in cents. Share counts in millions. Margins and returns as percentages, calculated from the filed figures. later is what a following report restated the figure to; vs is a second reading that disagrees. The figure shown is the one the original filing printed, and both readings are kept. Click any figure: opens the report page it was read from, highlighted; shows how it was calculated.
38 figures restated in a later report
Every figure is read again from the following year’s report: 234 confirmed, 4 differ, 38 restated.
No figure has been restated: every figure a later report printed again, it printed the same.
38 more figures were restated in FY2015 to FY2022, which a free account opens.