There is an official consultation on County Court and High Court bailiff enforcement, which could (possibly) result in the High Court ones having to give notice and play by the rules, or, on the other hand, in County Court bailiffs being able to act like cowboys.
ASS is working on a response, along with others and if you want to see our draft get in touch, and have a look at https://consult.justice.gov.uk/digital-communications/enforcement-of-possession-orders/ We have until the 2nd May.
Let us know if you are planning to respond and share your draft with us please (so we can learn and/or advise)