Is that rear tyre on the right-way round?
For the rear, yes. It's one of those dual direction thingies. Totally useless up the front as there's no grip at all, but fun on the back.
All the signs are on the footpaths but to get to the interesting stuff you gotta go on the paths. I generally go early morning when everyone's at work so there's been no hassle from the odd walker i've met. I've been riding and fine tuning this loop for years but since the council decide to spruce up the area with picnic benchs and fixing the bridges it's gone all pedestrian, hence the signs i think. But councils being what they are, the footpaths are actually part of a Sustrans cycling route
(i especially like the graffiti underneath)