No such role in the UK as a “nurse anaesthetist” like CRNA in the US if that’s what you mean. The anaesthesia associate role that has been posted about above is the closest thing, but it’s something I’d stay away from currently as the debate around MAP roles is currently ongoing, has become quite febrile and I question whether going into these roles currently is a wise move tbh.
There is scope to become an airway assistant/anaesthetic nurse through further training, where you support the anaesthetist (prepare meds/pass tubes to the doc etc), is this the role you mean?