As I interpret it, the OP is already living in Hong Kong- but per his other posts, he’s a school kid, so I’d expect he’s living with parents, and fantasising about running away to Scotland, despite the lack of any practical means to do so.
I doubt international travel for an undocumented minor would be any easier, if that’s the situation.
And is Scotland where kids fantasize about running away to? What happened to fantasizing about running away to join the circus?
If you can make it as far as Nepal, you can enlist in the Russian army (no questions asked, I assume). You will immediately be sent to the Ukrainian front where you would have to figure out how to surrender/defect to the other side. Escape to the mountainous Bieszczady region near the Slovakia-Poland-Ukraine tri-point and cross over into the EU. Walk/hitchhike to Calais and steal a floatie from a little kid on the beach. Maybe wait for summer to do the last part.
Not much “maybe” about it, since outside of summertime there’ll be neither kids nor floaties to be had.
On land: food banks and panhandling.
On the sea: get good at catching rats.
OK, then let me amend my previous answer: The quickest method is for him to first grow up, and then get a job and start saving up for a plane ticket.
Yes, I was talking about the “stow away on a boat sailing across the ocean” portions of the plan.
Even if you manage to successfully get on board a boat without being detected, you have to consider what you’re going to do a few hours later when you get hungry.
One of the reasons you want to go west; not East. Even a slow boat across the Channel is just a few hours. Better yet; stowaway on one of the Chunnel trains.
How is the OP getting to the English Channel from Hong Kong?
See above: Nepal - Russia - Ukraine - EU - Chunnel (if you can’t find a floatie)
There is a freight rail route that goes from Chongqing, in southwestern China, all the way to Duisburg, in western Germany. So I recommend hiding in the landing gear compartment of a flight from Hong Kong to Chongqing to get there. Then make your way to the freight rail terminal, crawl under a European-bound freight train, hang on really well and ride your way to Germany. Assuming you survive all of that, getting through Europe and across the English Channel will be easy by comparison.
Bring food, water, and warm clothes.
Not too much food. Toilets are scarce on this route.
Can’t recommend this, believe traveling this way is almost always fatal. Maybe try building a boat out of scrap wood then row/paddle to England. It’s been done (going the other direction). Took 7.5 years. Catch fish and drink rainwater on the way.
Probably faster, and definitely safer, to get a part time job and save up for an airline ticket.
I suppose you could try to have yourself “sex trafficked” there. The trick is planning your destination and not ending up on some sort of Epstein Island.
Back in the late 90s there were a couple of Japanese reality shows that purported to show people traveling across Asia or Africa and spending no money. People would walk up to them and offer them a job for the day or such.
Naturally, it came out that it was staged but not before some idiots tried it for real.
I hitch hiked / backpacked around Japan and other parts of Asia when I was in my 20s and unless you have some sort of magical ability, it ain’t happening.
Cf. An Open Letter to a Starving Child:
You can probably catch a flight here from Sri Lanka for as little as $2,500 if you shop around. So what’s keeping you? Okay, I can imagine how it is: you live in a back alley and you eat garbage. And maybe you don’t have the liquid capital to outlay $2,500 on a luxury-like first-class airfare to the U.S. Well, you can always fly coach for about a third of first-class fare, and if worst comes to worst, put it on the plastic. As long as you pay it off as quickly as you can, the interest won’t cramp your style.
As I posted earlier, there were Japanese reality shows that people supposedly traveled across Asia with no money. People would suddenly just offer to buy them food.
In reality, you ain’t getting very far panhandling as a foreigner and there aren’t food banks conveniently located a day’s journey everywhere, if there are any at all.
Having a smart phone with eSIMS or roaming handles a fair amount of basic communication, but that’s out for a strict reading of no money.
Also, there are places where people can’t travel so one would have to be careful about the route.
I wonder if there are any kayak/rowboat/canoe rentals near Calais. I’m not sure if I can buy that you can paddle them at 3-4 mph like Google implies but even if it is more like 2 mph, then if you “borrow” one during the night it shouldn’t be that hard to cross to Dover under cover of darkness as long as the tides and waves behave well.
Plus I wonder if the lights at night from the city of Dover might make an even better navigational aid than trying to see the cliffs during the daytime, but I’ve never been to Calais at all to see which one would be better.
If this is the case, I apologize for the, shall we say, coldness of my previous response. Instead, this is what I want to say: OP, I don’t know how serious or severe are the things you are going through that make you fantasize about escape, but I would like to suggest this one thing: spend some of that time doing something that might help you get through this until you are able to be your own independent person. There are many resources on the internet to find help for you to cope emotionally (please, though, not an AI chat bot!) and practically with your current situation. I sincerely hope that whatever is going on is not as dire as you, as a teenager, probably think it is. Almost always, life gets better if you keep working at it, and it’s worth the effort. My two cents. Best of luck to you.