Linton & Topcliffe
I cant help you much with teesside, but I can tell you that, if the weather is good enough then both Linton and Topcliffe will be operating Vigilant SLMGs, with quite a high level of acitivity in close proximity to both of these airfields, so keep your eyes extra peeled if you decide to route through the MATZes/Matzi (what is the plural of MATZ)
And if the weather is thermic, or with wind from the west then there will be intense gliding actvity from Sutton Bank (the gliding site close to Thirsk) , Especially as your route follows the line of the ridge quite closely (if you fly in a straight line between the two)
If you do go, then i wish you the best of luck
NB