There are hundreds of customs in London, though not all of them accessible to you and me. There are different ways of counting, but we have managed about 70 between us, divided arbitrarily here into nine sections, though the division could have been in other ways such as Royal, Civic, Military, Legal, Livery Companies. This is the way it turned out. There is world famous ceremonial here, of course, perhaps not entirely approved by custom purists, but we have not been able to cover countless City events because they are not open to the public - ‘We can’t have these frightful photographer chappies in here’.