Hi Ian,
The accounts would be separate, unless you wait and amalgamate them, and would have maturity dates based on the anniversary of the terms of the saving accounts - 1 month, 3 months 6 months etc.
SWIFTing is the best way unless you want to make a special trip every 5 months to Fethiye with cash (Less than £10,000) or take a visit to the ATM (using Nationwide Flex of course 0% commission) every day and draw out your daily allowance! The more you transfer each time the less the £20 - £ 30 fee bites.
Finally, with the YTL - £ rate at 2.31 today I would think twice before chasing the 14.02% net interest rate (16.5% less 15% tax at source) because your initial deposit could be severely dented. The YTL was at this level to the £ some 3 years ago and inflation has added around 30%+ to prices since then. The YTL is therefore, I think, overvalued in real terms and could drop like it did in 2006 when the rate hit around 3.19 YTL to the £.
Just some thoughts and not advice you understand, but hope it provides food for thought.