Racist bomb watch: Britain on Alert

LONDON: Hundreds of extra uniformed police officers on patrol in areas that are likely race targets. As well as Brixton and Brick Lane, they include the Asian communities of Southall and Jewish areas such as Stamford Hill and Golders Green. Additional special volunteer police constables and traffic wardens also drafted in. Undercover officers deployed. CCTV operators asked to ensure all cameras work and have film. The part-time police station at Brick Lane will also be open - it was closed when last Saturday's nail bomb exploded. Public street patrols organised in some Asian areas. Warning posters - both from the police and ethnic communities - put up asking for help from the public.

MANCHESTER: Market traders have been asked to look out for suspicious packages. Police deploying additional "highly visible" uniformed officers on the streets, including extra traffic patrols and police horse units. Police chiefs and city council leaders have asked senior figures from the city's Pakistani, Bangladeshi, Indian, Chinese, Jewish, African and Caribbean communities, to call for greater vigilance without spreading panic.

BIRMINGHAM: Some 4,000 posters - written in nine languages - put up in shops and other business premises in the West Midlands. Birmingham airport calling for people to be "on their guard" for unattended bags or suspicious activity. Extra uniformed patrols in ethnically mixed areas, such as Wolverhampton and the Sparkbrook and Handsworth districts of Birmingham. A more visible police presence will exist outside Sikh gudwaras, Hindu temples and mosques.

BRADFORD: Increased police patrols in "sensitive" Asian areas of the city. Community leaders asking people to inform the police of any suspicious packages or individuals. Complaints made that police have not responded to requests for an emergency telephone "hotline" to report attacks or suspicious activity.

BRISTOL: Extra police patrols in shopping areas right across the Avon and Somerset force, not just in ethnically diverse areas such as the St Paul's district of Bristol. Police also making appeals for information on any race hate crimes in the area.

LIVERPOOL: CCTV operators asked to ensure all cameras are cleaned and contain video tape. Extra patrols, both on foot and by car, in ethnic minority areas, particularly Toxteth. Community leaders met police and appealed to the public to be on the look-out for suspicious packages.

LEICESTER: Extra police patrols and appeals to CCTV operators to change tapes regularly. Warnings in areas where there are high concentrations of ethnic minorities. Assistant Chief Constable David Coleman said: "In view of the substantial ethnic minority population in Leicestershire, we are reviewing plans and taking specific measures to reduce the likelihood of incidents taking place."