Originally Posted by Beachhutdays

I would really appreciate some advice. We have a long sloping garden in North London that slopes down (about 4ft difference in height from top to bottom of 100ft garden).
The area ends under a huge oak tree just past our back fence. The ground is very squelchy, being clay soil, and we have an area of approx 20ft by 30ft that we would like some kind of 'floor covering' to make it easier to walk over and put a trampoline on. It gets tonnes of oak leaves and twiggy bits falling there too. We also have two dogs.
We can't pave as not allowed to affect tree roots.
Does anyone have any ideas please? Gravel?? Sub base??