Foxes are everwhere in these parts if you are out after dark. I have had them walking along with me on the pavement!
I have had cute fox cubs frolicking in my back garden (aaaaaahh..), foxes sunbathing on the shed roof and a dead one with really beautiful fur that I had to dispose of in the bin. Also an injured one that crawled under my car and eventually the RSPCA came and managed to catch it and take it away.
Best places to look for foxes are in undisturbed ends of back gardens and other bits of land, and of course the railway embankments are ideal sites for foxes to breed.
Urban foxes are always looking for food, much harder since the introduction of wheely bins, and they will eat frogs, fish, small pets and even worms, and chickens if there's any about. However most are forced to eat junk food: burgers, chicken, chips, pizza that gets chucked on the ground, so that's why they are very unhealthy and live only for 2 years or so. They also suffer badly from mange, which appears to destroy their fur.