My I pad has just told me my charger is not compatible and not charging. It is the original one that came with the I pad, does anyone know why this is?

First thing, have you tried a different charger ?

Ifs its a lighting connector then its possible the cable is broken. There is a chip inside the cable letting the ipad know its MFi certified. If it does not detect the chip then it won't charge the device.

My guess is that the charger is damaged.

Thanks, went and bought a new lead today. When I took the original one out I noticed it was the bit that goes into the I pad was bent so as you say probably damaged.