Is it the public health funerals you've looked at?
Local authorities are obliged to arrange a funeral where no arrangements are being made or have been made. Local authorities are permitted to recover the costs of such funerals from the estate of the deceased under the Act.
The Guardian reported that the average cost of a public health funeral in 2011 was £950.[2] In some circumstances where a person dies in hospital the relevant NHS trust may arrange a funeral for the deceased; however, ultimately the duty to arrange the funeral rests with the local authority.
https://en.wikipedia.org/wiki/Public_health_funeral
You have to be prepared to have no involvement in the funeral arrangements at all as that indicates taking some responsibility. (Or at least that's how it's worked for the people I know who've needed these.)
PS: Sorry, I got distracted and didn't finish this post for a long time. I should have checked posts in the interim to see this had been posted.