THIS week saw the first anniversary of Boris Johnson's ban on drinking alcohol on public transport - a move he listed as his proudest achievement. But how successful has it been?

Information released by British Transport Police revealed that no one has been thrown off the Tube for drinking, while Transport for London (TfL) admits that no one has been arrested, no drinks have been confiscated and no record has been kept of how many people have flouted or attempted to flout the ban or abused the staff trying to enforce it.

Drunks and drinkers not only make journeys unnecessarily unpleasant, but can actually be very intimidating and increase the threat of violence. So while the ban is welcome, I am yet to be convinced that it has been effective. I've heard reports of people still treating the back seat of the bus like a stool at the bar and TfL admits that little is being done to enforce or monitor the ban.

I would like to hear about readers' experience. Are fewer people drinking on public transport? Are uniformed officers making any attempt to stop people drinking? Has anti-social behaviour decreased? This is a good time to figure out whether Boris' policies are working or whether they were just designed to grab a quick headline.

NAVIN SHAH London Assembly