The figures show a 25% jump in product numbers listed on Mortgage Brain in a single month, up from 6,081 on 2 August 2010 to 7,618 by 30 August 2010.

The figures suggest 350 new core lender products were introduced in August, with broker exclusives  jumping by 29.9%, with 1.187 extra new products. There was also a modest 9.7% increase in lender direct products, bringing the total number of new mortgage dealsto 1,280.

The sharp rise in mortgage product numbers this August is in stark contrast to the 0.2% increase recorded last August, which then added little to a product total of 2,505.

Since then more than 5,000 products have been introduced, which is a 204% increase, bringing today’s figures to a new high, said Mortgage Brain.

The number of fixed rates launched last month rose by 31%, more than any other product type, bringing the total offered to UK intermediaries to 5,020 – up from 3,841 on 2nd August 2010.

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Variable rate products also leapt by 85% with 437 new products launched in August.

Tracker numbers continue their downward trend, however, dropping for the third month in a row (5%) but still hold their ground as the second most numerous product type at 1,649.

Mark Lofthouse, chief executive of Mortgage Brain, said: “Compared to August 2009 the UK mortgage market has moved ahead leaps and bounds in terms of product availability, which is great news for all.

“This time last year our analysis showed that five new products were introduced during August. This year the number peaks at just over 1,500. The overall 12 month analysis is equally as impressive with 5,113 more products now available in the UK intermediary market than there was this time last year.

“Unsurprisingly, the lion’s share of the increase is in products available to brokers to sell, which is substantially outstripping the increase in lender direct products.”