Even minor emergencies, although uncomfortable and at times painful are not exactly considered to be threatening to your health; a tooth abscess is. An abscess is direct result of poor hygiene in the mouth where tooth decay has been allowed to develop and a high concentrated levels of toxins build up around the root of the tooth, and with nowhere to go, develop into an abscess and you will know when you have one as well- they can be excruciatingly painful and your face will swell-up badly.
At this point, you may be able to dampen the agony with painkillers and by massaging clove oil into the gums for some relief, but you need immediate medical assistance: an abscess will ferry toxins into the bloodstream and in some rare cases, it can cause heart failure and unconsciousness. If you can’t see a dentist in the city of Leeds, then find a doctor. It can only be treated after a quick fix of antibiotics although even then, an abscess is known for re-offending and whatever your dentist does to you, you may have no other option than to have the tooth removed