I saw a similar wolf like creature in the garden of my old house in west London some some years ago...in a panic I called the RSPCA wild animal
section (it was around 6am and I got an emergency number from directory enquiries) anyway I described the animal-tall and like a wolf
-or a husky type dog-I was told by the RSPCA that it was a 'dog fox' and was harmless and wouldnt hurt me or my elderly cat.
No idea what a 'dog-fox' is btw but thats what they called the creature