Ladbrokes are bookmakers and therefore will do all they can to restrict you if you win too much as they cannot hedge all of bets(5 min etc).Most spread betting firms will not restrict or bar you as they hedge a lot of their bets so dont care. If you use ladbrokes 5 min up/down and start with £1 and gradually build it up they will consider actions against you. All in all thier prices are poor. I would definately recommned betfair for the 20min and 1 hr bets, you will never ever get barred.For other bets I would look at standard S/B companies.