The building society has raised switcher rates on select two, three, five and 10-year fixed rates by as much as 0.25 per cent.
Two-year switcher tracker rates have also increased by between 0.02 per cent and 0.20 per cent.
The lender has upped further advance rates on select two, three, five and 10-year fixed rates by between 0.05 per cent and 0.25 per cent.
And selected two-year tracker rates have increased by between 0.05 per cent and 0.20 per cent.
Analysis this week found that average two and five-year mortgage rates increased between February and March, as lenders pulled hundreds of deals off the market.