bought in uk from bittylicious using bank transfer, it was all done very quick. so BTC never fluctuated that much. i think its down to the exchange as my wallet is using a different exchange rate. There is no set BTC/GBP rate.

why the big difference between the price you buy and when it arrives in bitcoin wallet i.e. it was 0.1 BTC FOR 528.7gbp when arrival it was approx 485 for 0.1BTC all within 10 mins

Cheers