I think what evidence there is that hypnotherapy works for smoking cessation is equivocal, and depending on which therapist you use and the length of the course, can be quite expensive.
Regarding the list of qualifications, the relevant ones wrt hypnotherapy would be
AdvDip THP, N-SHAP =Diploma in Therapeutic Hynotherapy and associated qualification
GHR Registered - General Hypnotherapists Register.In an effort to improve the professionalism of hypnotherapists, they now have to be registered to practice
SQHP - Senior Qualification in Hypnotherapy Practice. - I think you get this if you have been in practice for a couple of years.
DipNLP and Prac NLP are to do with Neuro-Linguistic Programming, which some regard as a somewhat cultish self help programme. These qualifications can be earned via online study , but are not particularly relevant to smoking cessation.
LLB - Batchelors Degree in Law. No relevance to hypnosis.
BHSAI - No idea :)
So, you have someone who once studied law, and somewhere along the way decided to take up counselling / hypnotherapy. Did a 2 year course, Registered themselves, and have been practicing for 2 years or so.
Not entirely sure why anyone would want to list all the other qualifications, unless it is a kind of ego-wall equivalent :)