The proposed minimum limits wouldn't affect most "normal" drinkers. The program was mostly discussing the issue of teenagers "preloading" ... getting hammered on cheap supermarket booze before hitting the pubs and clubs which then stay open longer, using the 24 hour licensing introduced in 2003, in order to maintain their income. This double-whammy of cheap supermarket booze and longer pub and club opening hours is causing the problem. You must have seen TV programmes and newspaper reports of teenagers drunk on our towns' streets - this is the root cause.
Another problem is the terrible attitude that many young Brits have towards alcohol. Most develop a more sensible approach as they get older - but by then the damage could be done. A solution that somehow changed attitudes, rather than enforced a minimum price or maximum drinking hours, would be preferable.