Originally Posted by
GBM.flights
Please note: for any travel originating outside of the UK, cash values above will be converted into the equivalent local currency at the time of booking.
This was never the case in the past. The payment was always due in GBP. Any reason for this change? make some extra dosh on poor conversion?
This means that it will be converted from the currency of that origin to diamond club's local currency (GBP). That note has been in there since at least April 2009.