It is sad you can't have Filas or many other great protective breeds in the UK.
As far as the shiny coat, I guess it is his dog food and maybe the raw meat bones. All three of mine have a nice shiny coat. That is the one thing I always think of, when we see the vet. She always comments on how the dogs coats are healthy, soft and shiny, (she knows they eat Innova) Then she checks, recommended food... Science diet, at the bottom of the bill.