A quick note on purchasing additional memory or storage for your photographs and files:
I have found that eBuyer and 7dayshop are great for deals and pretty timely and reliable making them firm favourites.
However, BE CAREFUL if buying a mechanical disk (moving parts and easily damaged) from Amazon as last year a number of disks were all delivered damaged despite packing (inc. replacements). Admittedly I haven’t tried them since so they may have solved this problem
Amazon Prime is great for speed/convenience so I would consider them for any memory without moving parts such as solid-state disks, memory cards and USB memory.