Further East you have our Zedshed Group of enthusiasts spread across outh Wales and some Bristol based members who come to my home garage we call Zedshed Cymru, based in Newport just off Jnc 27 on the M4 (Highcross). We cater for Z3's and Z4's, owner supplies parts and we muck in to do the jobs required, donations to the Shed funds is up to the individual, gets spent on consumables and tools as required. Full Diagnostics available with various software packages. I have a scissor lift in the Shed which makes underside jobs a lot easier. We keep in touch off the Forums by using a Whats App Group, if you want to be added in send me a pm with your phone number and I will add you in.
Sounds like you may have a sticking caliper that is causing the car to pull to one side when braking, needs exploring to look at the condition of pads and discs as well as the caliper.
We do have run outs during the year and attend some of the local car shows where we get together, have had some summer evening runs usually up towards Brecon and use some of the interesting roads around there and owards Builth Wells. Stop off in Builth at the Chip Shop and picnic by the riverside car park before heading South and splitting off to home destinations.
