You can always goto the little free park in Northallerton(about 8mins drive from ozy) - its not too bad, the hips about the best thing in it. Some kids have trails in Ozy, but I'm not sure where. I have some trails and a half pipe in Brompton(a mile north of northallerton) - your welcome to come and play so long as you take any litter.
A word of warning about Boro - your probly safe in prissick park - watch the street spots if you goto any - Boro is like the wild west mate, haha.
Silky is the best park -
Darlos OK and not too far for you to visit, but watch your self too - infact be carefull where ever you ride up north, don't grief any of the local chavs - best to humor them and chat a bit and your car will be safe
You could visit Hurworth - it has an oldschool spot, just a small 1/2 pipe really
& the huge overflow bowl on the outskirts of darlo - you need rope to get into that, haha.
Might be best to avoid Newcastle park for now too - small war going on this week - check SP message board.
http://streetphire.co.uk/forum/index.php'topic=6153.0read it all