We meet in the Priory Visitor Centre, CV1 5EX. The nearest car parks are the West Orchard Shopping Centre car park (map) and the Salt Lane Multi-Storey (map). For those willing to walk a little further (~10 minutes), there is often free parking on Sundays on streets outside the inner ring road - try Lower Ford Street or one of the adjacent roads.
The entrance to the Visitor Centre is on the ground floor - look for the large glass double doors.
There are several routes to this entrance from the nearby streets, but only one is step-free - it starts on Trinity Street and is shown below in blue.