I've just arrived back and the HR bods have said I can claim for 2 of my wifes journeys back to her parents whilst I was OOA. They said they would add 2 warrants to JPA and I could claim then. So basically all I'm after is an idiots guide of how to claim the mileage (she went by car). Now I've had a look at JPA expenses and I cannot find them, so any help would be appreciated. Many thanks dudes.