I had dinner last night at Grocers’ Hall, the home of the second oldest (or is it the second richest ?) of the city livery companies, which date back to the reign of Elizabeth I and beyond, and are now devoted to good works, with a certain amount of civic ritual.   The building is relatively recent, set back from the street just by the Bank of England, and one realises that the guilds and the combination of charity and community stretches back to the middle ages.