Historically, a standard mortgage term in the UK was 25 years.
New data from the Financial Conduct Authority, released as part of an FOI request, shows that the number of people taking out ultra long mortgages (35 years) has increased by 117% to over 80 thousand. Up from around 3 thousand in 2018.
Although mortgages with longer terms can reduce the month payment, they add tens or hundreds of thousands of pounds in extra interest charges over term of the mortgage.
For full details, see the report here: