I can only give you Garanti bank rates for TL.
1 Month:
500,00-5.000,00 %15,00
5.000,00-25.000,00 %15,00
25.000,00-999.999.999,00 %16,00
Daily:
25.000,00-100.000,00 %16,50
100.000,00-999.999.999,00 %17,50
bank exchange rate today
CURRENCY TYPE GBP
BUYING RATE GBP 2,85380
SELLING RATE TL 2,92720