Quick Electric Fuse id please

Hi

My radio fuse has gone I think (not the fuse on the radio - I tried another radio both dead) Got my 11yr old daughter in the vehicle on a trip to Grandmas all weekend - we need a radio.

So can anyone tell me which fuse it is - I had a look at all the fuses under the steering wheel but couldnt see any obvious one gone or maybe its something else?

Its a Discovery 1 200td1 (J reg)

Thanks
Rob

A6, B1 or B9.

Thanks very much