I have read this a lot and I'm sorry it's people's experience. It's not been my experience of bereavement in England. When my mother was dying many people visited her almost every day -- colleagues, friends, relatives, neighbours, the local priest (even though she was an atheist and he knew that full well). It was a hard death, cancer, and it took a while.
After she died, I received so many kind letters from people, filled with memories about how she touched their lives. I appreciated knowing she was valued and missed, and it made me understand properly why it's important to always write to people about their own bereavements, and go to the funeral if you can. It really matters. People still contact me from time to time to share their memories and I am so grateful.
She died at home and after we said goodbye to her body, they took her to the funeral home by the crem. We had an ordinary crem funeral, no god stuff, and a simple wake in the community centre. Or what we know as a wake, which is basically a do after the funeral, with no body present.
My mother left no instructions but it was not difficult to arrange. The CoOp did it all, basically. I organised it in about a day, and I was barely 25 at the time. We chose some music and read some words and shared some memories and cried together. It wasn't very different from the many funerals I have attended in church, just a bit more Lennon and bit less Jesus.
After she died our family and friends organised an unofficial rota of support for my father, inviting him for dinner etc and checking in on him, for a year or so. Of course we were sad and nobody expected anything else. It was terribly sad. I have always talked freely about my mother and I've had many conversations with all kinds of people about their own family bereavements.
I am of Irish Catholic extraction but way back, like 150 years back, same as half the bloody country, I think! I think we could say it was an English bereavement.