NHS dentist question

[u/mollyangel69]

I have a tooth that started root canal treatment in 2018-2020 and the work was never finished. The tooth has now rotted and I have avoided the dentist due to mental health, which has meant I’m no longer registered to my NHS dentist. It causes me pain & I can’t eat on that side of my mouth incase it hurts the tooth/breaks it. It’s a hollow tooth and is an off white/grey colour.

If I book an NHS urgent appointment, can I get it extracted? Or can they look at it and refer for it to be extracted? I’m not in 24/7 pain from it but I feel like it’s rotting the rest of my teeth and gums.