Kensington Mortgages has doubled its secured funding lines to £2.6bn, which it says will support its owner-occupied and buy-to-let home loan business.

The specialist lender secured funding from Lloyds Bank, BNP Paribas, National Australia Bank and Bank of America – moving its resources up from £1.3bn.

The new cash consists of an £800m boost to its existing Sloane Square warehouse facility, now valued at £2.1bn, and a new £500m warehouse facility.

The mortgage lender says its Sloane Square warehouse line is one of the largest UK mortgage warehouse lines for new residential mortgage originations.

It adds the new £500m facility will fund the call of two existing securitisations – Finsbury Square 18-2 and Finsbury Square 19-1.

Last year Kensington’s combined securitisations raised just over £1.8bn.

Kensington Mortgages capital markets & digital director Alex Maddox says: “The renewal and extension of our warehouse facility, which will provide funding capacity for new loans and allow Kensington to grow even faster, despite volatile market conditions.

“We’ve raised just over £16bn of funding through warehouse lines and securitisations since 2015.”

“Our aim is always to help underserved borrowers. We look beneath the surface and consider complex and multiple income sources and help those who otherwise may struggle to own a home.

“The business is seeing strong growth accompanied by stable returns and this is reflected in the strong appetite among investors for our securitisations.”

The firm adds its assets under management total over £11bn.