Before purchase, Damian spent at least an hour with me, allowing me to try the Nikon D750 and D810 with various lenses. This was wonderful and directed me to the better choice for me, the D750. Purchase was rather more problematic: collecting the D750 + a 24-70 lens (offered at a slight discount as a kit) at Drummond Street seemed to present a few admin problems and at one point I was told on the phone (after a lengthy wait) that my D750 had been allocated to somebody else but they had retrieved it. On collection, expecting to get the promised 6 months interest-free, I discovered that the loan is actually not free - there is an admin fee of at least £25, enough to make the 6 month-deal lass attractive. Another customer had the same reaction as me that day. Jessops use the same V12 Finance company and absorb the fee themselves. But the pre-purchase service was, as I said, absolutely terrific.