Generally, assess if they look vulnerable.
Are they:
- high
- drunk
- injured
- moving
- are their lips blue
- can you see them breathing
- do they respond if there is a loud sound ( don't go just waking people up, but you can just say something to them to see if they respond if you're worried.)
- vomited/vomiting/look like they might vomit
- have blood, urine or faeces
- completely alone
- young ( under 18 )
What to do for each:
drunk: see if they are able to focus, see if they respond to you, are they vomiting? Are they conscious? If they are vomiting, roll them over into the recovery position to save them from choking to death on their own vomit, and alert a non-emergency line that there is someone vulnerable that may need medical attention. Alert a nearby shop or public transport office so that they can have someone monitor them to ensure their safety. Are they drunk after a night out? Do they have ID? Can you call them an uber? Are they able to answer if you ask them their address, or phone pin to call an uber for them? Are they a vulnerable group when drunk? ( under 18 m or f, women, younger men, LGBT ( higher chance of hate crime, especially for someone trans ). Then try and communicate with them about getting them home or somewhere safe.
injured: call for help, if no medical professionals are around, alert the nearest authority you see ( tube worker, bus driver, etc ) who will have channels of communication. If there are none, call 999 and then assess the situation. Have they been stabbed, hit, spat on? Is it safe for yourself and for ambulance staff? If yes, do as 999 tells you. If no, get yourself safe and follow 999 instructions.
moving. If they are not moving, and do not respond. Call 999. Same for breathing.
Vomiting - covered above. Recovery position, let someone know. Call 999 if needed.
Blood, urine or faeces - likely to be very vulnerable. Alert someone, if they are not injured, call the non emergency line or your local authority.
Alone/young: if they are a child, call local authority. Stay with them, especially at night. Do not leave a vulnerable child alone. Ideally, get both of you somewhere safer and well lit. If they are alone, see if they are safe. If they are a woman, is it dark, or a potential increased risk of SA? Try and get them to move indoors or elsewhere. If they are a man, is there a risk of mugging or assault? Same advice.
part 2) Is it:
- very cold
- very hot
- raining heavily
- near a bar
- very late
If any of the part 2 boxes above are ticked, you need to check if they're ok. If it's too hot, do they have water? Even people who are here illegally to beg do not deserve heat stroke or worse. If it's freezing, do they have a blanket? If it's raining, have they got dry shoes, an umbrella? It is very easy to get infections from consistently wet skin, especially on the feet. Are they near a bar? Are they homeless or just drunk and unable to move? If it's very late, are they a group at risk? Eg: young men for stabbing, young women for SA, children for trafficking.
Now, if they're healthy, safe, and are not in extreme conditions or appear mentally or physically ill, respond politely but leave ( if you wish ), or give them an item above ( umbrella, jacket, blanket ) and refer them to a local authority. Money is usually a risk since unfortunately there are gangs.
It's tough to know what to do in these situations, it's easy to just walk by. But if someone is not awake, moving, or they're in conditions where they're not safe, we all have a duty to ring 999 if needed. If someone is unwell, I could give less of a damn about the legality of their presence in the UK. You personally are not going to do anything to solve this, you cannot, you are not a government authority. All you can do is try to ensure vulnerable people are cared for.