It is the first mortgage lender to join Countrywide's panel in a number of years.
Mark Blackwell, C&G's head of corporate and specialist intermediary sales, commented: "From a corporate sales point of view, this is a real coup. The national distributions of both C&G and Countrywide will compliment each other enormously, making it an ideal match. We are two very progressive organisations and this will be a fantastic partnership. We are proud to be appointed to such an exclusive panel of lenders."