From tomorrow the lender is cutting rates by up to 0.1 per cent on 11 of its deals.
This includes a 95 per cent loan to value (LTV) five-year fix purchase deal with £1,000 cashback, no product fee and a maximum loan of £375,000 falling to 3.53 per cent from 3.63 per cent.
It is also cutting its London Help to Buy two-year fix at up to 55 per cent LTV from 1.58 per cent to 1.49 per cent with a £749 product fee and maximum loan of £330,000.
Meanwhile, Barclays is increasing rates on nine deals by up to 0.09 per cent.
Its two-year fix for purchase and remortgage at up to 90 per cent LTV is increasing from 1.78 per cent to 1.87 per cent, with a £999 product fee and maximum loan of £375,000.
And its five-year fix for large loans up to £1m at up to 75 per cent LTV with a £999 fee is increasing from 1.90 per cent to 1.96 per cent.