People will say why would you borrow now, why would you do a fixed rate... blah blah.

But if you need the money now for something you can't defer, you simply need it now, not when rates are lower. Same if you don't "need" the money but you see an investment opportunity that must be taken now, that will yield more than the monthly installment.

The only factor I would consider non-negotiable is whether you can afford those 195 pounds every month or not.