One of them!
Anyway, Portsmouth has had three tracks.
The first was opened at Chalton in 1928 and ran for the grand total of two meetings.
The second, the Wessex Stadium, opened in 1929 by Wessex Speedway co. in conjunction with Dirt Track Speedways Ltd., the company behind West Ham and Southampton. It was a 440 yard unbanked track. Some top names like Frank Arthur, Bluey Wilkinson, Sprouts Elder and Phil Bishop appeared in open meetings. The track was said to be very bumpy and over the winter a new 382 yard track was laid. Portsmouth formed its own team, which included Steve Langton and Phil 'Tiger' Hart (later to ride for Eastbourne, Birmingham and Hackney amongst others) and raced challenge matches. The track closed at the end of 1930.
In 1935, Tom Bradbury-Pratt, the promoter at Harringay opened another track at the Greyhound Stadium. Harringay raced a league match against Hackney there and a week later a challenge match between Wembley and Wimbledon was due to be held but was rained off. There were no further meetings at the stadium until 1937 when the Albatross Motorcycle Club promoted two matches against Basingstoke and Reading.
Two attempts were made to re-introduce speedway just after the War but came to nothing and then again in 1977, when locals collected a 1,300 signature petition and the GRA agreed, but the local council turned down planning permission (where have I heard that before?).
As far as I know there has never been speedway in Colchester...and I think I would know!
Now read the book!