This is a very interesting review of three churches by a well-known atheist. His comments on prayer and communion are particularly revealing.

From Christianity Today:

A well-known atheist visited three churches in one day… this is what he made of it

Lucinda Borkett-Jones 30 March 2015

Sanderson Jones, a former stand-up comedian who leads the Sunday Assembly – also known as the ‘atheist church’ – spent Sunday attending three London churches and tweeting about his experience.What started as a visit to his friend Dave Tomlison’s church became an impromptu tour of London Christianity. The three churches he visited were St Luke’s, Holloway, where Tomlinson (author of ‘How to be a Bad Christian’) is vicar, Hillsong in central London, and St Mary’s Bryanston Square.Contrary to popular belief, Jones said he found them welcoming places, and said churches should realise that there is much they are doing well.”I think churches should recognise that they are already doing so much right,” Jones says, referring to the idea of having people welcoming on the front door, and people knowing where and when to set up for coffee after church. “I went to the American Humanist Association and they had a special lecture on why it’s important to be welcoming. It’s just the most basic things which you’ll take for granted in Churchland, which are in fact really powerful.”