I called BA in the UK last week and told them of all my flights (see post 1) and I called back today and they have quoted me £4351.30 GBP incl. all taxes. I can pay with a UK credit card, and they will post the tickets to my UK address, all of this despite the fact that the itinerary is ex-IST. I am very impressed with BA UK telesales at the moment. Now just got to pluck up the courage to call back and actually spend four and a half grand ....