I am a dog walker/ dog sitting in the east midlands. I have it sort of as a part time business as I am at uni, its very slow business and I don't earn alot of money. So far I am charging mates rates since all of my customers have been so far people who I have built up a rapport with through the dog park, I don't like to charge them full price which is a bit silly really, the training clubs and word of mouth. I would say to you get friendly with people at these places, then you will start getting business through word of mouth is the best way to get business. I had someone say to me not far back that she would have not trusted her dogs with anyone else, she had not been on holidays in previous years because she did not trust people to look after her babies, if you can get reviews like this you should be quids in
My prices are £8 first dog for an hour/ £2 subsequent dogs
My mates rates are considerably cheaper, I think the cheapest one I did was £50 for 5 days for three dogs walked twice a day, an hour each, fed and watered plus at least an hour playing at the house. So I guess that would be £8 for three dogs walked for two hours, £2 charge for feeding, watering and a hours additional excerise. It pays to be my friend:)
Good luck