So i decided to do a summary of what I've done to bring you all upto date.
Punctures, punctures and more punctures. It appears to be that time of year folks as I've fitted no end of new tubes to customers bikes. Slime filled tubes are a good option, they don't prevent punctures but if you get one 9 times out of 10 you can just let the solution fill the hole and pump the tube back up, without removing the wheel or tyre. Repair2ride stocks all sizes of slime filled tubes and any schrader (car type valve) innertube can be converted to slime too.
The best preventative to punctures is to fit schwalbe marathon plus tyres which have a thick layer built into the tyre that prevents punctures. These start at £30 each then fitting on top. So not the cheapest option but the best. I have a customer who i fitted these to his bike who hasn't had a puncture in two years, including cycling to work and completing the coast2coast twice. Thats how good they are.
Also had an electric bike with a broken chain which required 2 chains due to the offset nature of the bottom bracket.
Fitted a new bottom bracket and chain to a customers boardman hybrid which he planned to use to complete the coast2coast this weekend just gone.
Have got one bike in the workshop which has had a whole new drivetrain (gears etc) and another one coming in tomorrow for the same treatment.