Wapping rhymes with:
swapping, whopping, chopping, copping, cropping, dropping, flopping, hopping, lopping, mopping, popping, propping, shopping, sopping, stopping, swapping, topping, whopping
Wapping sounds like:
waiving, waving, weapon's, weapons, weapons', weaving, weavings, webbing, weeping, whipping, whooping, whopping, wiping