If you (or someone else) have been attacked or think that you are in immediate danger the first priority is to make sure you are safe.
If the incident has just occurred or you feel in immediate danger, you should call 999 and ask for the police.
If you have witnessed an attack on someone else try to help without risking your own safety. Shout, attract the attention of others and call the police.
Avoid any unnecessary confrontation with your attackers. If you have been attacked or threatened it might be tempting to confront the perpetrator(s). However, you could be putting yourself at risk of further attack. It’s best to call the police and let them deal with it.