Out of the following groups of people :
- Non smokers with health issues relating to smoking
- Non smokers with aesthetic issues relating to smoking
- Non smokers with no issues relating to smoking
- Ex smokers
- Smokers who might like to quit
- Smokers who have no desire to quit
- Pub landlords
- Pub staff
- People who work in pubs as DJs, musicians, etc
- People whose work is related to the pub industry
- Those who live in smokers' households
- The general public, specifically anybody walking past a pub
- Any other group
Which ones tend to discuss the UK smoking ban, and why?