OK right, you can't restrict ownership. Would it be legal to simply grant extra rights to owners who adhere to the LTSE's rules? Ie, one share carries 1 'point

OK right, you can't restrict ownership. Would it be legal to simply grant extra rights to owners who adhere to the LTSE's rules? Ie, one share carries 1 'point' of voting power, unless the owner is an individual or an entity which adheres to the LTSE rules, in which case the share carries 1 + kt points of voting power. If an entity outside the LTSE holds some shares, that's fine. They just extract very little value from them compared to an entity within the LTSE, increasing the value of all other shares outstanding and creating a strong incentive for that entity to sell back into LTSE.