Yup similar situation, our extra borrowing is on SVR now.Exact same situation, I've just "locked in" a 4.64% 2 year fix with Halifax (have to stick with them, one sub-account needing renewal with the other 3.5 years out, plus circumstances have changed) and am hoping this comes down somewhat by the time we're coming close to needing to sign on the dotted line. If I recall you're in a similar situation from posts in this thread. Might be in for a fun situation if rates are "imminently" coming down come SVR time, do you wait a month... Two? Then you're in to sunk cost and you just know the rates will plummet the moment you agree
Another option is to consider a tracker for a couple of years, who knows!