If its a dwarf variety and you want fruit, best kept in a pot - move under shelter for the winter, or into a cool, light room. They flower early and often, if they're not under cover, the flowers get frosted and fall, which means no fruit. They also dislike wet, cold soil, which is usually a good description of the conditions in Britain in the winter. Feed with something like Miracle Gro general purpose - but not past mid July.