HSBC had, and still has, a deal for 10 year fixed rate fee-saver mortgages at 70% LTV for 2.79% (see link below):http://www.hotukdeals.com/deals/10-year-fixed-rate-mortgage-2-79-max-ltv-70-0-booking-fee-hsbc-2476124
They have now introduced a similar product for those with 5% more equity, i.e. 65% LTV, at 2.64%. Those that go for this product will not see an increase in the interest charged until January 2027.
You should only choose this product if you are certain that you are in your 'forever home' because early repayment charges are high.
I'm pretty sure this is the cheapest ever 10-year fixed rate fee-free mortgage. It even beats Coventrys 2.69% (which is only available at 50% LTV)