Well, Peterborough isn’t really ‘up north’ for most residents of the British Isles,  I’m talking about Grimsthorpe Castle near Bourne in the East Midlands.   That’s where we spent the last weekend of August, swaggering around the picturesque Grimsthorpe Castle, home to the Grimsthorpe Speed Trial  and I have to say it was bloomin’ great to be back at a riding event again – remember them? We’d not heard of this event until it was mentioned in conversation by CB…