Just built this for local erands and commutes...
Found an old Steel MTB frame in the local rubbish corall round the corner. Bit of angle-grinding, some powder-coat from the nice people at Armourtex in Hackney and some choice parts and I can now present 'Grocery Getter'. Waiting on a kickstand and some sort of box for the rack. 3 speed Sturmey Archer with back-pedal brake, hub brake at front. Seriously good fun.