http://www.maplin.co.uk/ - sign up for their email newsletter and you'll get some discount vouchers. These are aimed at the hobbyist and have some high-street shops which are great for getting the odd low-value item without P&P charges.
Also have a look at
http://rswww.com/ which is RS Components website. Same thing but more geared towards the supply/professional market and thus may be more expensive for small orders. Chip extractor - # 423-992