I assume you're aware of the existing company "Griffin Associates" (also of the UK).
Um... I'm not overly precious of my work, so I guess I don't mind, so long as your business is above board. Just be aware that I will continue to use it for my own purposes, since you're not purchasing rights to it or anything).
Good luck with your business.
PS. I am not interested in having my work associated with anyone/anything less than honest (at this stage, I have no way to check, but I'll keep an eye out for future online presence). So, please assume that permission is not given for dogy activities. Of course, if you're into such things, then I realise my lack of permission wouldn't stop you... I'm going to take the fact that you asked here as a sign you're above board...