Apparently magistrates in Harrow are insisting that on renewal of their licenses, all pubs in the area have to now serve exclusively using plastic glasses.
I gather from an acquaintance that The Malthouse in Stanmore has since closed, as the fall-off in trade due to this new rule was around 75% at weekends. Punters are going to other pubs elsewhere that have yet to renew.
I used to drink in Harrow around 5 years ago - I hope this never happens to The Castle.