I booked via 2-4-1 outbound LHR-HND a few weeks ago at T-355 days for our honeymoon (online using voucher), and have just booked the return at full avios at 1am T-355 days. I did this to secure seats at 1am, but I also think this saves on the tax element of HND-LHR)

I have contact BA via Twitter Chat to get the 50% avios back and applying the voucher on the return. They said this has been sent to ticketing - any idea how long this takes to get the avios recredited?

Sidenote if F comes available on the return would any more £££ be due, as it seems to be the same tax on a one way in J as F from HND-LHR.

Thanks