He banned booze on the tube, now Boris Johnson is forcing binge drinkers to wear electronic tags.
London's mayor is launching a pilot scheme to fit drunken offenders with tags which detect alcohol in sweat.
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George Osborne told MPs London would shoulder a large part of his 37% reduction in transport funding.
The prison was originally opened in 1852 as a mixed prison before becoming the first female-only local prison in England in 1902.
The victim was travelling between Seven Sisters and Highbury and Islington when she was assaulted.