Just in case you have something to buy from Amazon anyway and can benefit from free supersaver delivery with a £15+ spend.
MicroSDHC 4GB Card
Supports SDHC, Class 2 compatible host devices
MicroMate USB 2.0 Reader:
High-performance transfer speeds: up to 15MB/sec
Single slot reader SD / SDHC cards and compatible SD adapters
USB 2.0 compliance, transfer rate speed
Reader includes cap to cover either slot or USB connector end