The LAA members can choose between several levels of third part legal liability insurance (up to GPB 5,000,000) the passenger legal liability being sublimited to SDR 250,000 per passenger.
Should you need a higher limit, you can request it and it will be subject to the insurer's agreement.
Whatever the limit bought, it automatically increases to GBP7,500,000 when you fly to airfields where MOD / Crown Indemnity is required.