The message below was sent out by the City of London Crime Prevention Association for sharing;
Counter Terrorism Police and local forces work throughout the year with event organisers, partners and commercial organisations across the country to give advice and guidance on safety and security measures, taking into account any specific intelligence and the wider threat.
With events being organised for people to enjoy the European football matches together over the coming days, we are asking businesses to remind their staff and customers to be vigilant.
The following is public messaging that businesses can use in their own communications.
Help us to keep these events safe by reminding people to be vigilant for anyone or anything that looks out of place or suspicious and reporting it to a member of staff, security or police.
As with any busy area, police are encouraging everyone to remain alert while out and about, and to report anything suspicious immediately to police, security or staff.
You can also get in touch to report anything suspicious confidentially via http://www.gov.uk/ACT or 0800 789 321. In an emergency always call 999.
More information on what to look out for and how to contact police can be found at our Action Counters Terrorism website http://www.gov.uk/ACT .