Simon Biddle, Mortgage Strategy columnist and former marketing director of Preferred Mortgages , has joined sub-prime lender Infinity Mortgages as head of marketing and communications.He left Preferred in February 2004 to take a career break, but says now is the time to re-enter the market. He says: “I felt it was the right time to return to the market and I’m looking forward to the challenges ahead at Infinity.” Infinity Mortgages was launched in January 2004 as a lender, funded by Mortgages PLC. But after MPLC was taken over by Merrill Lynch the firm found alternative funding with Investec, a specialist banking group listed on the London and South African stock exchanges. The deal is Investec’s first venture into the UK sub-prime market. Infinity’s chairman is Ravi Takhar, who was involved in the original sale of Mortgages PLC to Japanese firm Nikko Principle Investors, and its chief executive is Matt Gilmour.