The bank is also temporarily withdrawing its green remortgage range for residential and buy-to-let customers.

Rates have reduced by up to 0.15%.

The cheapest five-year fixed rate at 60% LTV is now 4.14%.

Standard two-year fixed rate products have seen the biggest reduction.

Other higher-LTV mortgage rates have decreased by up to 0.10%.

Two and five-year fixed rates have reduced by up to 0.20%.

Average rates have edged up again this week, after seeing reductions earlier this month.

Reductions apply to all two-year and five-year fixed rates across Keystone's ranges.

The lender has increased selected higher-LTV mortgage rates.

The Society has trimmed rates by 0.10%.