He will be tasked with offering mortgages to independent estate agents as well as servicing high net worth clients.
Cook said: “As a mortgage practitioner the difference in conversion rates between working in national estate agency groups and working at an IFA is stark.
“Most in-agency advisors adopt a conversion rate model of around 10%, but at Westminster Wealth it is over 70%.
“The culture and ethos is one of integrity and rewarding quality advice so, with all these factors in mind, it made perfect sense for to me to join an IFA with a credible brand.
“Lenders are increasingly embracing IFA distribution in the mortgage market so now is the perfect time to come on board.”
London-based Westminster Wealth Management placed over £100m of lending in 2014 and is on course to reach £150m in 2015.
The firm is targeting £250m in 2016 with the recruitment of quality brokers, while it also anticipates buoyancy in the market.
Martin Lockyer, managing partner at Westminster Wealth Management, said: “Martin is the perfect recruit to join our team.
“He is focused on quality advice and customer service and we have altered our business model and invested in our senior broking capacity to accommodate the best advisers, like Martin.
“He is the latest recruit in our growth plans to attain 50 IFAs with £1bn of assets under influence by 2018.
“We currently stand at 31 IFAs with £500m assets under advice, so our goals are ambitious, but we have a series of exciting business and marketing initiatives to help us achieve them and the mortgage team with be a central part of our future success.”