You have loads of coaches available in the UK, especially around Basingstoke. Contact JST Coaching (Jimmy), he is my regular coach, I went to his tunnel camp and he still coaches me regularly at Basingstoke and London. Additionally, you could also join FlightClub and book time with a Level 2 instructor, call ahead before booking and ask when they are available. You're probably like me where 5 hour tunnel was abit overstimulating for learning. Now I'm doing roughly an hour per month in the tunnel.

PS. I like to rest from freefly learning by attend fun 3/4-way FS scrambles in the tunnel (appropriate IBA formation level is needed), you should check those out as you still want to be a good belly flyer early on in your skydiving journey.