Got new tyres put on my bike today. Good quality tyres with reflective bands on the side wall - very smart they look too - probably the first new tyres my bike has had in about 25 years

However, while at the bike shop the young man took up the slack on my gear change cable - and now I can't change gear. I have the old-fashioned friction change by means of a small lever mounted on the frame and it's gone so tight I can't move it

Coming home was a nightmare - all uphill with a strong headwind and unable to change gear so I ended up walking most of the 2 1/2 miles or so home. Also my brakes now need adjusting and the little sensors for my bike computer are catching each other so I had to disconnect it.

Not happy

This morning my bike worked fine, now it's not