Although not as big and glamorous as the Oxford Street location, this sister shop is a useful stop if you need a quick, inexpensive makeup fix.
The quality of the items I've tried is quite good considering the prices. Today I purchased the Ultra Glossy Stylo lipstick for a mere £4.90, and I find the texture and staying power similar to a Tom Ford product costing 3-4 times as much. Staff are made up to the nines and cheery, happy to answer questions about the products.
Check out the bargain area while there -- there is usually a plentiful variety of 'last season' maquillage available for dirt cheap.