They are always at each others houses, they play in the boules team, they throw frequent parties, she sits on DSS tribunals and appeals boards and was enormously helpful to my mum when her husband died, filled out all the forms etc for her. They get their gardener to cut my mother's grass too. They had a friend of another neighbour's to stay for a MONTH when the neighbour was ill and had a nurse in her spare room.
They helped with the catering for my stepfather's funeral.
They run people to the airport
I personally have been round there for drinks/food at least 5 times in the last year and I don't even live there.