 McCorquodale returned to Parliament two years later, when he was elected as MP for in Epsom at a by-election in December 1947, following the resignation of Conservative MP Sir Archibald Southby.He retired from House of Commons at the 1955 general election and in September 1955 he was elevated to the peerage as Baron McCorquodale of Newton, of Newton-le-Willows in the County Palatine of Lancaster.Lord McCorquodale married firstly Winifred Sophia Doris, daughter of James Oscar Max Clark, in 1931.