According to Moneyfacts, there was a light peak in June when numbers rose from a low of 2,566 in May to a slightly higher 2,810.

But, by the beginning of July numbers had dropped again to 2,728, with the bulk of these disappearing deals being in 90% and 95% loan-to-value (LTV) market.

In June the 90% LTV tier had 183 – still a huge low when compared to the 779 which were available in March. But by July the numbers had fallen to 70 which was lower even than the 100 available in May.

In the 95% LTV market, product numbers dropped to 14, according to Moneyfacts, having declined from 391 in March, to 41 in May, then to 31 in June.

Numbers have not been this low in the 95% LTV space since 2009 when there were only three of these mortgage deals on offer.

Among the 14 deals on offer are Barclays Springboard mortgage and Furness Building Society’s 95% deal for locals.

Eleanor Williams, finance expert at Moneyfacts, said the data comes as many buyers had received the welcome news they would be benefiting from a stamp duty holiday in the coming months.

Yet its research shows that there still remains a dearth of available products.

She said: “This information could be disappointing to many would-be borrowers who may not have someone to guarantee, do not work in the specified job roles, or do not reside in the relevant postcodes, especially considering that while savings rates continue to plummet, increasing their level of deposit is likely to more be difficult.

“However, it bears noting that lenders have been launching products in the high LTV sectors, particularly at 90%, and over the course of a month the numbers of available deals can fluctuate enormously.

“It seems that while lenders have the appetite to lend, intense customer demand being levelled at the small number of providers who have relaunched in these tiers is overwhelming, at a time when operational capacity is already stretched and there continues to be existing customers requiring support with payment difficulties in addition to new business underwriting.

“Therefore, until more lenders return to this space with products to support the clear borrower demand, it seems likely that we will continue to see an ebb and flow in availability.”