if you are living abroad then strictly speaking you are not registered with a GP here and therefore he can charge you for undertaking the test so you best not mention your living arrangements and the results will only be posted to a UK address (unless he is an understanding GP). If you live in Mainland Europe the well woman screening is on the whole very good and often better than in the UK as well as cheaper than in the UK according to many of my colleague nwho fly home for a whole assortment of treatments because it is cheaper even with the flights