New Tyres & Alignment check

I need to replace a couple of tyres.

I'm almost 100% sure I'm going to give the Falken 452's a go.

I can find them at a good price online for the tyres only.

As soon as I find somewhere that will sell me them and fit them the price sky rockets.

Does anyone know of anywhere in the Cambridge/Peterborough area that will fit tyres I supply for a reasonable price?

The reason for my need to replace tyres is that one of them has worn down to only just legal (this was 4 brand new tyres purchased towards the beginning of last year).

The other three tyres are fine.

So I'm guessing we have an alignment or tracking issue to solve too.

Don't want to go for the cheap "Kwik Fit" type check as apparently they can do more damage than good.

I know "Hunter" checks are the best - but to be honest, I'm not really in the mood for spending £100 on such a check.

Any advice on where I could go for a good alignment/tracking check?