West London derby been in the Football League for a longer period of time than Brentford and had stronger rivalries with the likes of West Ham United and Tottenham Hotspur, whereas Brentford's main rivals are Fulham and QPR. Also Brentford developed a bigger sporting rivalry with Arsenal at the time as both clubs vied for the title of London's number one club. The only bad feeling between the clubs was soon after Chelsea's foundation and admission into the Football League in 1905, the other West London clubs, including Brentford, lost many supporters and potential supporters to the only professional Football League club in
Football Supporters' Federation to concerns raised by supporters. The FSF also has detailed meetings on specific topics with the relevant authorities or other bodies such as the Premier League, FA, Football League, Professional Footballers' Association, Independent Football Ombudsman and the Police Match Commanders. They also meet with government and the All-party parliamentary group on football of MPs when necessary. The organisation regularly takes up specific complaints and cases which are raised with it by individual members or affiliated organisations and they encourage the participation of all supporters in this process. The FSF is free to join and holds an annual conference called Fans'