MK1 top plastic socket broken

Hello everyone- I’ve been pointed in this direction by Strida in case anyone can help. I’ve been given a Mk 1 Strida to repair for a friend- it’s been sitting in a garage for many years. Both the top and bottom swivels (ball joint and quick release system) are broken, and Strida no longer produce these. Might there be anyone here with spare parts they’d be willing to sell? I’d like to keep this lovely machine on the road if I can! I’m based in the UK.
Thanks,
Ben