Prop trading and retail are two different types of trading.The former takes the whole risk- the latter will require a deposit.Also retail will prob try and screw you on exchange fees- and charge you a " desk fee"-also known as " Bums on seats" etc.Steer clear of this sort of operation, used to be profitable- but not anymore- U may as well Spread bet- As thats tax free, with a 2 tick spread on Bunds etc...