There is very little rivalry between Brentford and Chelsea, mainly due to the fact that they have been in different divisions for over 60 years. The only time that the two clubs ever shared a division was in the old First Division between 1935 and 1947, but despite the fact that both clubs are local to each other, it was never seen as a big rivalry to either side, as Chelsea had been in the Football League for a longer period of time than Brentford and had stronger rivalries with the likes of West Ham United, Arsenal and Tottenham Hotspur, whereas Brentford's main rivals are Fulham and QPR. Also Brentford developed a bigger sporting rivalry with Arsenal during the 1930s as both clubs vied for the title of being London's number one club.