If in a pub or club, tell the bar manager, stewards or members of staff.
If you are a friend or passerby, stay with them and keep talking to them.
Call an ambulance if their condition deteriorates.
Don’t let them leave with someone you/they don’t know or trust.
If there is still some evidence of the spiking - in a drink, powder etc - keep hold of it if you can. It may be used as evidence. Give it to someone you trust, until it can be given to either the Police or Medical Services.
Encourage the victim to get blood tests as there may be a risk of infection. You can arrange these via your local sexual health clinic
Call 101 and report the attack to the Police as soon as you possibly can.
Encourage the victim to speak to someone they trust, a family member or friend, so they can get support with the aftereffects of being spiked.