Mortgage lenders are flooding the market with more fixed-rate products in attempts to lock in home-owners who may be tempted to switch to one of their rivals in the coming months, a financial website has reported.

By the middle of this week, there were 2,675 fixed-rate mortgages on the market, which is an increase of 297 deals, or 12.5 per cent, since the start of September, says Moneyfacts.co.uk.

It suggested lenders are giving themselves a mortgage make-over as they are bearing in mind the danger that existing customers could be attracted by a rival.

Some of these customers may be starting to think about remortgaging in order to shelter from expected increases to the Bank of England base rate and keep their borrowing costs down.

While the vast majority of new mortgages being taken out are fixed-rate deals which cushion borrowers against any immediate impact of the base rate rising, around two-thirds of outstanding mortgage balances are held by people who are on a standard variable rate (SVR) deals, according to industry estimates.

Some mortgage holders may struggle to switch because of a lack of equity or tougher borrowing requirements. But brokers anticipate seeing an upswing in people looking to jump off their variable deal amid expectations that the Bank of England base rate will go up from its historic low at some point next year. Moneyfacts said that the average two-year fixed rate on the market has fallen from 3.52 per cent in August to 3.27 per cent.