Real Estate Community Forum

Hi, I have a BTL mortgage with a lender whose SVR is quite high. I am thinking of few options with one being a tracker for life (3.49% on top of BOE base rate) and other being C&G. C&G have 2yrs fixed then switching to their SVR which currently stands at 2.5%. I read on their website that their SVR will not go above 2% of BOE rate. I asked them to provide an illustration but they can not give this SVR rate pledge in writing. I am wondering if they will stick to this pledge or not. Any advise?
Thanks in advance