Finsbury Park TMD was a railway Traction Maintenance Depot situated in London, England. It was the first purpose built main line diesel locomotive depot opened in England and it was fully commissioned in April 1960. Finsbury Park was a steam shed under British Railways with the depot code 34G; the depot code of the diesel depot under BR was FP. The nearest railway station is Finsbury Park.

Based on the paragraph above can we conclude that " Finsbury Park TMD operates more than 20 trains"?
It's impossible to say