You could try your bank - many have sharedealing services - or poss TDwaterhouse.co.uk. In all cases watch whether the trade is to a nominee account or a certificated trade. The later means shares will be on the register in your name but the settlement period is longer so a trade may need to be done quickly to meet the 6 Nov deadline. Nominee account trades generally have shorter settlement periods but the shares are in the name of the nominee co so you need to approach the broker to get them to tell BA that you are the ultimate beneficiary of the shares