China will step up supervision of foreigners who conduct surveys and map areas of the country. Foreign organizations and individuals, who engage in surveying and mapping in scientific research and teaching programs, travel or exploration, must obtain approval from the government and accept supervision, the State Bureau of Survey and Mapping said.

The bureau notice said that foreigners who illegally survey, gather and publish geographical information on China will be severely punished. Chinese partners or translators will be fined if they fail to stop illegal mapping activities as soon as they find out about them. http://english.people.com.cn

The Ordnance Survey has finally stopped falsifying Britain's maps, almost 80 years after the government first ordered cartographers to delete sensitive sites in the hope of thwarting German bombers.

The popular Landranger series will now show the nuclear warhead plant at Burghfield, near Reading, hitherto shown as a mysteriously empty field although well known to anti-nuclear demonstrators. Other previously hidden installations include the signal interception aerials at RAF Digby in Lincolnshire and the vast underground munitions dump at Glen Douglas in Scotland.

The access road appears for the socalled Corsham Computer Centre in Wiltshire, thought by conspiracy buffs to be Tony Blair's nuclear shelter. The Internet and high-resolution satellite photography have made attempts at hiding sensitive information obsolete and the Cabinet Office security policy division in Whitehall finally agreed this March to scrap the censorship. The maps are being revised in a rolling programme. www.guardian.co.uk