Extract from VSM:
For the early post-war weekly speedway crowds were vast. Get your laughing gear around this 1946 lot - 65,000 on May 23 for Wembley v New Cross; 76,000 on June 20 against Belle Vue; 67,000 on July 4 v New Cross again; 85,000 on July 11 against West Ham; and at the final meeting of 1946, on October 3, they had to close the stadium gates with 20,000 more fans outside who had the meeting relayed to them by loudspeaker. Even half of Fleet Street's representatives failed to gain admission until shortly before the interval.
The car park contained 2,000 vehicles, and many people who arrived in motor coaches didn't even bother to get out. They stayed put and listened. Extra police were rushed in to control the thousands locked out.