The lender saw a 60% and 50% increase in the value and number of applications from October last year.
Kensington’s said its second, third and fourth biggest days for new lending in recent years all fell within October 2015.
Steve Griffiths, the lender’s head of sales and distribution, said: “These strong figures are testament to our determination to drive the growth of the business since Kensington was purchased by new owners in January.
“It’s been a busy year, and we have been working hard to deliver a huge programme of change to successfully move into our new operating environment and improve our core product range.”