For anyone interested:
I started to remove the side panniers racks but stumbled across a seriously tight screw that looks like it had already been tampered with before trying to get it off. So its a bit worn down - nevertheless I tried to undo it to no avail.
BMW Vines guildford have very nicely offered to try and take it off if I pop in for a couple of minutes, hopefully they will be able to.
However, I've only just realised that taking the side racks off I won't have anything to hold on to since I bought the bike second hand from the dealer and I wasn't give the handles for the bike. I'm hoping the dealer has some spare as I'm pretty pissed off I never got them (it never occurred to me when I bought the bike and being my first ever bike I just never even realised such a thing

)