Amusing view of the actual situation...
The council agreed that they would not allow any rides on the south promenade when the Thompson's sold them the land to continue the tramlines to Star Gate, and to expand the promenade, many years ago.
Part of the agreement was the "Pleasure Beach" signs on the tram destination boards, the rest was a very clear agreement that only the Beach could run amusement rides on the South Promenade.
The issue wasn't with showmen setting up a couple of rides, the issue was breach of contract at the time with the council, who didn't actually have the power to allow them to set up.
I understand the council agreed to settle out of court, and admitted they were in the wrong at the time.
The council then agreed to limit what was to be placed on the prom.
An agreement that has since been pretty much upheld.
Allegedly.
Even the go carts by the south pier breached the regulations, so their relocation from Star Gate was only a temporary agreement.