In Harlesden, where I live, they have a clock on a roundabout called the Jubilee Clock. Here it is...

By this clock an old lady will frequently set up a crackling but loud pa system and sing hymns down it badly. Sometimes she will read from the Bible in the special 'Bible reading manner' (e.g flat, gabbled and with no pauses for punctuation or any aids to general meaning) - the manner shows that merely hearing the words is enough, not comprehending the meaning. Sometimes she is joined by an old man who yells at people that 'Jesus is the ting'. Oddly, they don't really interact with the public, they just stand and talk at the air.
On other days the Muslims go there. They are better organised, in uniform with pretty decent leaflets and they bring a table. They talk and gabble all over each other and try to get people to sign their mailing list.
Meanwhile the '1-pound-man' stalks between the HSBC bank and the Barclay's across the road, begging every white person he can find for 1 pound. A few years ago he was the 2 pound man, but the recession has hit him hard. He still has brand new trainers on though.
- Sometimes all these people annoy me, but on the whole I find they make wonderful street furniture.
(But as for those who jump on the bus and intone in the Bible reading voice very loudly so all the bus hears, that's as bad as people with faulty headphones and a fondness for D&B).