I'm actively avoiding paying off my mortgage. I'm making the minimum payments and have released equity.
There are a few reasons I do this:
1 - Money in an S&S ISA is far more accessible than equity in a mortgage.
2 - Interest rates on mortgages are so low (I pay under 2%).
3 - There are better tax incentives elsewhere (SIPPs and ISAs).
4 - Unless you rent out your property, a mortgage-free house doesn't generate cash.
5 - Investing in Index funds means my money is diversified. I think it's risky to have hundreds of thousands of £s invested in one sole asset.
So anyone on here reading and thinking that you should try and pay off your house ASAP, the majority of the time it's actually a bad financial decision to do so. Obviously, it's still a great achievement to be mortgage-free - but think of the maths behind it. The main reason to pay off your mortgage is psychological and not financial.