If you suspect it, report
it.
If you think you have seen someone acting suspiciously, or if
you see a vehicle, unattended package or bag which might be an
immediate threat, move away and call 999. The terrorist threat
remains real and there is no room for complacency. The public
should remain alert and aware of their surroundings at all times.
If something strikes you as suspicious then trust your instincts
and call the police.
Anti-terrorist hotline: 0800 789 321
If you have information that requires an immediate police
response always call 999.