for the mileage claim
Motoring expenses
You can deduct the cost of using your car for business purposes. There are two ways of working out how much you can deduct:
a fixed rate for each mile travelled on business, using our fixed mileage rates
the actual expenses, worked out using detailed records of business and private mileage to apportion your recorded expenditure
The amounts to use are:
• car or van 40 pence a mile for the first 10,000 miles
25 pence a mile thereafter
• motorcycle 24 pence a mile
• cycle 20 pence a mile.
this is off the gov web site