Psychology can be seen as a B list subject, but unless you're taking 3 weak subjects I highly doubt it would put you at a severe disadvantage; do what you enjoy and want to do.
Is psychology seen as a soft subject in top unis for english. And how do u get on the website that gives university rankings by subjects?
Psychology isn't a strong subject as such, but it's not a soft subject either. It depends on the university - obviously the better ones will demand more from you. Which university/universities are you aiming for?