As a result, its self-cert range will now only be available to the self-employed.
The lender is also increasing all intial mortgage and revert rates for non-conforming, buy-to-let and right-to-buy products by a quarter point.
Applications will be accepted until close of business on Monday 10 March, at which point all changes will take effect..
Polly Hughes, head of marketing at Mortgages plc, said that the changes had been made 'to ensure we can adequately control both new business volumes and credit quality.'
She added that the lender was continuing to 'carefully monitor' market developments.
