AI Hardware Plan

The AI Hardware Plan is a UK Government initiative pre-announced by Secretary of State Liz Kendall in an address at the Royal United Services Institute (RUSI) on 28 April 2026. Kendall named five British AI hardware startups, Fractile, Olix, Lumai, Optalysys and Salience Labs, alongside Arm, as the British supply-chain candidates the plan is designed to underwrite. The full plan is scheduled for launch at London Tech Week in June 2026, with the specific instrument, procurement, equity, or grant, left unspecified at the time of the speech.

The plan emerges from the structural pressure created by London's datacentre grid saturation and the UK Government's ambition for AI Growth Zones in Scotland and the north. Domestic compute that runs on domestic silicon is the political logic; the five named companies span different architectural layers: in-memory inference (Fractile), edge silicon (Olix), optical compute (Lumai), silicon photonics for matrix multiplication (Optalysys) and hybrid photonic-electronic chips (Salience Labs). Backing all five at meaningful scale would commit the UK to a portfolio of architectural directions rather than a single national champion.

The Plan sits within a larger capital architecture. The Sovereign AI Unit writes equity cheques at the model-training tier; ARIA's £100m Scaling Compute and £50m Scaling Inference Lab address research compute; the AI Hardware Plan is intended to address the silicon supply layer beneath both. Whether the instrument is procurement (multi-year purchase commitments), equity (SAIU-style minority stakes), or grant (Innovate UK-style awards) will determine which of the five named startups it can reach at industrial scale. A plan that arrives in June with only a grant envelope will not finance a fab line; procurement or equity would.