Cheers Dave! We checked all pipes etc around it & nothing was wet.
someone suggested it could be the pump seal. Unsure where that’s located so trying to search online for pics!
think we’ll try another wash tomorrow, keep it pulled out a bit….space v tight so can’t pull it out totally cos can’t then open door! We’ll put paper underneath & keep checking. Someone also suggested putting paper towel around possible leaky bits so may try that but don’t think we can access anything higher up….just can’t reach.