Another possibility is to offer to become a "Canine Carer" for an agency before you commit yourself to setting up your own business. I did this for a few years when I was ill and couldn't do the travelling associated with my usual job. Obviously you don't get as much in fees as you would if you are paying yourself, but at least it gives you the opportunity to see how you get on and also solves the problem of insurance, which is covered by the agency.
The one I worked for was called Pets and People
http://www.petsandpeople.co.uk/
It doesn't cover your area, but will give you an idea of how they operate. Another one which is well respected in the Midlands is Pals4Pets
http://www.pals4pets.co.uk/
To find those which are operating in your area, I suggest you go into all the local vets and look for the advertising leaflets and cards that they tend to leave there. Also look in your local newspapers, as they often place adverts in those too.
Have a look at the website of the National Association of Professional Petsitters
http://www.petsitters.org/
It will give you some idea of the legal ins and outs. They might also be able to tell you which agencies operate in and around your home area.
I've also found the following websites which might be helpful:
National Home Boarding Register
http://www.nhbr.co.uk/index.shtml
Petsitters (have info about franchising)
http://www.petsitters-uk.com/
National Association of Registered Petsitters
http://www.dogsit.com/
Animal Angels
http://www.ukpetsitter.com/
If you Google "home boarding for dogs" and/or "petsitters" you will find masses more!
Good luck, and let us know what you decide to do :wggle: