What level are you Graeme? If you are going for level 4 then you cannot give your work address as your base, it has to be your home address. Otherwise you are heading for problems. For example, let's take a Saturday when you are travelling from home. Your work address (that you have told the FA is your home address) is 5 miles from the ground, but your actually home address is 35 miles from the ground. You would only be able to claim the 10 mile round trip rather than the 70 mile round trip that you have actually travelled, leaving you in the region of £20 out of pocket.
Similar applies for joint travel arrangements. They will assume you are at "home" on a Saturday, which they think is where you work. You'll be setting yourself up for all kinds of problems.