When does overpayment letter come?

Ams40

Hi, I have received my final award for 13/14 and I have an overpayment to pay back. It is not disputed and am happy to pay it back. But, the new form for 14/15 states that I pay it directly to them and they will contact me. Any idea how long this is after receiving the renewal forms? As I received everything for 13/14 and 14/15 all at the same time. I just don't to wait 6 months and find I have a final demand turn up to pay something that at the moment I don't know how to make the payment.
Thanks

Horseunderwater

Yes they will write to you. The letter should have a payment slip on it.

Ams40

Do you know how long after all the other paperwork the letter arrives? I need to plan a budget of how to repay it but unsure if I need to do this from now or say 3 months down the line. I have read posts of overpayment demands coming in years later. As this is for the year 13/14 do I not get the demand until next year?
TIA