Following this announcement a number of lenders moved to offer such deals, but now the market has disappeared.
Moneyfacts.co.uk spokesperson Darren Cook said: "Raising the capital when interest rates are so low is difficult. Investors expect a higher rate of return than those currently being offered for terms of ten years plus, as the only way for base rate to go from here is up.
"With so little funds available, lenders are concentrating on their core business of shorter term deals.
"Britannia BS is the only lender to offer 15 year deals, but with rates starting at 6.49%, these are likely to be unattractive to many borrowers.
"Only nine lenders are offering ten-year deals, with the majority of the market offering deals of no longer than five years.
"Long term deals may be unappealing to borrowers, particularly in an unsettled economic environment.
"Borrowers currently do not want to be tied in to long-term deals and instead prefer stability in the short term, with the freedom to make crucial changes afterwards.
"Providers and brokers alike prefer the frequent turnover of shorter term deals as they can ensure borrowers are on an appropriate deal for the market conditions."
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