There’s very little riding of interest on any of the Surrey Hills and North Downs to be honest. I would try the South Downs or maybe east angular.
FYI, are you sure you’re actually found ‘Redlands’ or have you ridden on ‘Redlands Trails’? The two are not the same thing.
The Nirvana rides are split I think, but you’ve sort of got a Hobson’s Choice really. You can either join the fit bunch and wheeze your way around the area or you can join the freeride bunch, in which case you can jump, drop and possible crash your way around 😆
Howard at Pedal & Spoke does do shop rides on Sunday morning but you should call him first to make sure he’s actually up and ready to go. He’s a great guy and will make sure that everyone is looked after but don’t let that make you think he’s not perfectly capable of launching the biggest stuff you can find or wiping the floor with the fittest XC boys around.