Rickmansworth England

We live in a 4 bed semi-detached house near rickmansworth. Very close to the tube and within 40 minutes reach of central london but with the benefit of countryside within 5 minutes. Lovely area with all amenities close by. Pubs/restaurants/activities nearby. I am looking for a house/pet sitter whilst we go abroad in the summer. Although we are away for just over two weeks, I would be more than happy for a sitter to stay however bests suits. Pet sitting will be for my 2.5 year old red fox Labrador who is well behaved (but strong) and would require a daily walk of 30-45 mins. He can be left at home for 4-5 hours.