Seems to be the cheapest I can see.
Delivery is £5, which still makes it a good price, or it's free if your order is over £100, or you can go and pick it up at the store.
MAKITA HP1621K PERCUSSION DRILL 650w 240v
Reversing system allows improved brush life and no power reduction in reverse. In-line positive grip design maximises power thrust.
* Forward and Reverse Rotation
* Variable Speed Trigger
* Double Insulated for Safety
* Keyless Chuck
* Max in Steel: 13mm
* Max in Wood: 30mm
* Max in Masonry: 16mm
* Blows per minute: 0-44,800bpm
* No Load Speed: 0-2,800rpm
* Input wattage: 650w
* Net Weight: 1.7kg
Includes: Depth Gauge Side Handle and Carry Case