Travel expenses

0149witty

Hi,
I have a client that is a subcontractor in the cis.
He has been working at the same site for around 18 months. He wants to claim mileage because he says he hasn’t kept receipts.
His current return would be for the months 6 - 18 months
He does go to two other sites, but needs to go to the main site first before going on to one of the other sites.
This is quite a grey area and I am looking for other views on this please.

Do I use the 24 months rule and put through his mileage expenses, or do I only allow his travel to the other sites as the main site is ordinary commuting (I have asked to see his contract, but haven’t had it yet)

I would appreciate any views on this, or what you would do in this situation.