I see - you are on tracker IO. Mine is an SVR IO and my issue is the rate, although having seen some other posts my (new) rate of 5.05% seems cheap in comparison to some other 'SVRs'. pTSB are clearly obsessed with trackers and getting folks off them and will look at any excuse to renegotiate, which actually means get you off the tracker. SVR, as indicated in other threads, is a fairly meaningless term. I don't think pTSB have a 'standard' rate, so when they say SVR plus 1% then thats meaningless as well, they can effectively charge whatever they like when move you on to SVR. That said, they don't want mortgages in arrears either, as to them thats probably worse than a tracker that is being serviced. So you do have a negotiating position, and I would start with 'what are you going to give me if I agree to go from a tracker to SVR?'. They were offering incentives last year, so might be an opportunity to reduce your sums owed as a way to balance off an interest rate increase.