Well you're not going to like this reply but if you took it to Stoke Joinery (HI) I reckon he would charge <£10 ??
I know you probably want to DIY but...
Alternatively my Dad has a large industrial size bandsaw, but I'm not sure how accurate it would be, it can be taken outside on wheels, so length isn't a problem....
My son has just bought a circular saw on a bench I think that's what it is really noisy and really messy, I will just check with him and get back to you
Kr
Jackie