After three successive top-six finishes in the First Division beginning in 1935–36, Brentford's decline began with the departure of key players during the 1938–39 season, which culminated with a near-relegation. For 1946–47, the first Football League season since the end of the Second World War, manager Harry Curtis was able to call on many of his regular players from the final pre-war seasons, though the elder players, such as Irish international full backBill Gorman, utility manBuster Brown and former WalesforwardIdris Hopkins, were all at age 35. Long-serving forward and once-capped England internationalBilly Scott had remained with the club and was then aged 38. The team fielded versus Aston Villa on 1 February 1947 was the oldest in club history, with an average age of over 31.5 years. Curtis supplemented the squad by bringing in wing halfCyril Toulouse and forwards John Gillies, Maurice Roberts, Alan Smith and George Stewart. As in the final pre-war seasons, Curtis would also promote players from the Bees' reserve ranks, signing amateur Roddy Munro to a professional contract and handing debuts to Frank Latimer, John Moore and Wally Bragg, with Bragg going on to become the youngest-ever Brentford debutant at that time. Brentford had a good start to the season, winning four of the first five matches and going top on the opening day. The majority of the team's goals were scored by forwards Gerry McAloon, Fred Durrant and George Wilkins, but when the goals dried up in September 1946, Brentford's form took a turn for the worse. Matters were made worse when McAloon and Durrant were quickly sold to Celtic and Queens Park Rangers respectively. A supporter, writing to The Brentford & Chiswick Times, commented "it would seem that Brentford were unaware when they allowed them to go that Thomas, Durrant and McAloon had scored very nearly all the side’s goals in the previous season". Manager Curtis received half backGeorge Paterson from Celtic in part exchange for McAloon and also strengthened the team with full back Malky Macdonald and forward Archie Macaulay. By December, Brentford had dropped into the relegation places and a run of 11 losses in 15 matches culminated in the heaviest defeat of the season – 6–1 away to Sheffield United on Christmas Day. Brentford's form improved after the Christmas Day thrashing, going undefeated in four of the following five matches to climb out of the relegation places, but from February 1947 onwards, the team's form evaporated. Despite Len Townsend coming into form and going on to become the Bees' top scorer for the season, the goalscoring problem was compounded by the transfer request and subsequent sale of George Wilkins in February. Bill Naylor and Dickie Girling were signed in February to bolster the forward line, but scored just three goals between them before the end of the season. On 24 May, defeat to Sunderland and a draw for 20th-place Charlton Athletic away to Everton consigned the Bees to relegation to the Second Division. By the time of the final day of the season on 14 June, Brentford had lost 14 of the final 19 matches. The relegation was the first suffered by the club since it joined the Football League in 1920. A number of club Football League records were equalled or broken during the season, including fewest victories, fewest home victories, most defeats, most home defeats, fewest home goals scored and highest average attendance. As of the end of the 2018–19 season, Brentford have not since played in the top-flight.
