Have just looked in the book – Hedgehogs by Pat Morris. and it says ‘True albinos are sometimes seen among mainland hedgehogs. These have no dark colouration anywhere, not even a black nose, and their eyes are characteristically pale pink. Probably fewer than one in 10,000 hedgehogs deviates so markedly from the normal colouration’.
It says the ‘leucistic’ (blonde) ones have brown hairs and dark feet and black eyes. I am wondering whether it might be an albino which is probably even rarer.
I think you are extra lucky anyway having such an unusual hog visiting.