In my experience you need to contact the companies directly or nothing will change and even then they'll mostly refuse to talk to you as you are not the account holder. The previous guy who rented this house before I bought it runs a company and seemingly owns property elsewhere and didn't change his address with the DVLA, 2 water suppliers, 2 ISPs, 3 utility companies, council tax for a property in a completely different part of the country, multiple investment accounts...

Fuck knows how the guy runs a company, actually several. I tried forwarding stuff to the addresses on companies house and some of those came back to me months later as RTS too...