Changing mortgages terms

pebblesx_2

Last year and this year I have made mortgage overpayments of just under 10%. My next mortgage renewal is July 2025.

I got a letter from Halifax saying they are reducing my monthly payments by about £70. 

I phoned to say I don't want that and they say I have to have a mortgage review to reduce my terms. My term is 11 years but obviously I will pay it off before then as I plan on keeping making 10% overpayments each year. 
Why do I have to reduce my terms?
Why can't I keep overpaying and the mortgage will be paid off when it's paid? I only have a small mortgage.
I'm based in Scotland.

chanz4

the protection consumers all  cried for, red tape

Hoenir

The Halifax will revise your monthly payments to tie in with agreed contractual end date. Simply keep making the overpayments. In July 2025 when the fixed term ends you can apply to shorten the term permanently to clear the remaining mortgage balance quicker.