so the road was closed on the morning of the race & re opened after racing.
The prom races were finished because of a solo fatality, going into the top roundabout a female solo competitor clipped another rider who then went off & collided with a lamp post, think this was 1999.
The great Barry Sheene actually raced at New Brighton Prom.
I've got a program from the 1976 race somewhere showing the sidecar grid.
The roundabout on the back straight where you go round it the wrong way as Bob b says, is where I bust my brother in laws scaphoid when we pranged against the kerb

Last time I raced the prom was 1986, good days