I've just had a quarterly statement for my Offset Mortgage (not One account but similar), and it tells me I have paid just under £300 less interest on my mortgage for the last 3 months than I would have done without an offset.
This is the second quarter I've had one, the first saving was similar and covered the re-mortgage fees, so already I've made £300 for doing nothing.
Pity I didn't do this a few years ago as i only have 8 years left on the mortgage.
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