i've got a 7 year old who's about an inch too short and needs a booster seat. Not one of those full car seats just the thing that raises you up a few inches.

The ones ive got at the moment are the 5quid mothercare jobs and they look rubbish plus they slide all over the place when nobodys sat in em.

Can anyone reccomend a nice booster seat? preferably something that looks nice against black leather and wont shoot off the seat at the slightest hint of braking?