l have 106 zest. l recently was involved in a car accident when another car smashed into my **** my car got fixed in the garage new bumper etc. since it got bak it has developed a squeeking coming from the back left hand side, its doesnt tend to do it when its been raining- any ideas? x

Probably a rear suspension bush.
This was probably damaged in the accident, but can be very difficult to spot with a visual check as the bush can not move far in its mounting. The bush will also still be firm so checking for play with a tyre lever will also reveal nothing. Get someone who knows their stuff to have a really good look at the rear bushes, the offending bush will probably only have moved by about 1mm, so it will be very hard to see, but that small movement will be enough to make the bush squeak as it moves.