If anyone gets a chance the house numbers along Walls Court could do with investigating. No 3 is a listed building, but seems to be part of the relevant High Street address (marked as hairdresser). The larger building facing onto Oldbury Road seems to have several flats with Walls Court addresses (probably 5 or 6 based on UPRNs and a solitary address on N side at the back of the pub. Post Office Lane may be similar.

According to NSUL data I'm looking at the Ambulance Station is also GL20 5JU. This may have changed.