It's a rather different situation to the Vulcan - not nearly as expensive, and my impression is the CAA are much more receptive to the idea (as two Buccs have already flown for test/ferry flights in civilians hands albeit only briefly before being exported to SA).
I'm sure if HHA were running into the sort of problems with approval and finance that the Vulcan guys had, they'd be asking for help but at the moment they just seem to be quietly getting on with it and making good progress.
They would appreciate leads on additional spares - particularly wheels and engines - though, as you can never have enough!