Household bills in joint names

[UniteTheUnicorns]

Reading another thread I noticed several suggestions about preparing for older age by having household bills in joint names.

As we are newly retired with no mortgage I am trying to simplify our lives as inevitably one of us will go first and the other will have to pick up the pieces.

I am happy to have joint names on all our bills, but is this possible as we don't have a joint account?

I did this a few year's ago as DH would struggle to have proof of address if he was asked. We're with octopus, did it over email. I think they asked me to copy the email to him for him to confirm he was happy with the plan, but they kept me right. We do have a joint account but that shouldn't matter.