As someone who's in London for the second time:
- the general rule of thumb when using the Underground is that no matter where you're going in Central London, it will always take you a minimum of an hour to get there, so plan ahead.
- the tube is extremely efficient, with most lines running a train every two minutes. Yes, certain platforms can be busy during rush hour, but I usually travel outside of those hours anyway, and so miss the squash. And yes, the Northern Line is straight from Hell if you have to travel during peak times (which I had to for months), but I wouldn't swap it for rush hour on the N1/N3. Besides, you get nicely propped up by the people squashed around you! £140 (Zones 1-3) for a monthly isn't bad considering it allows you to travel on any service within a designated zone, 24hrs a day, 7 days a week. If you're settled here, never buy on prepaid if you have the option of monthly or weekly.
- there are strikes, but nothing like SA. Being South African, I'm used to a lot more disruption than the Brits having to wait a bit longer for a train, or having to take a bus instead - the horror! And no, they don't strike every other week.
- London is overpopulated - there are more people than available housing (which is another reason Brexit had to happen). Simple supply and demand, so yes, living in one of the best cities on earth is going to come at a price. £800 for a double room is accurate - of course, it depends on which area you live in, how close it is to a transport link, etc, but that's generally the going rate. Rule of thumb is half your salary if you're earning an average wage.
- food is relatively cheap. If you eat out, you're going to pay more - same if you go out for drinks instead of buying from the bottle store. That's no different to SA, really.
- there is a lot of things to do here for free - much more than SA. Museums, parks, etc. It's a surprisingly big, green country - there's a lot of open space to explore here. Oh, and did I mention you can do it all safely? That you can walk straight from the pavement to your front door without having to unlock security gates, disable alarms, etc? That you can sleep with the windows open (with no burglar bars) on a hot night? Never felt safer in my life.
- outside of London, as people have mentioned (and not very far out, either) is much cheaper. Houses are larger, with bigger yards, for the cost of a double room in the city. Most towns have a quick service to London Waterloo or Victoria, with journeys being 30mins-1hr: the same amount of time it would take you travel within the city, anyway.
- the UK's unemployment rate is 4.9%. I went for an interview the day after I landed, said no thanks, and still had a job within the first month after turning down a few more. If you're qualified and it takes you 6mths to find a job, you're doing something very wrong if you can't find a job in London and you're South African (the rumours are true - they like hiring us because we're awesome and aren't shy to get stuck in. Also, we don't pigeon-hole ourselves. We're happy to do more than just our job descriptions).
- it's important to stop converting to Rands as soon as you start earning your salary in GBP. It'll drive you made if you do. Buying wors for £7 does not mean you're paying R140 for it. You're paying £7. Mental, I know. Ok, so I do still convert - when I smoke. It costs R200+ for a box of 20 cigarettes in London. It's part of my motivation to stop.
- the weather can be ***. But you're on an island in the North Atlantic - what were you expecting? The summers are actually surprisingly good!
People from other countries (SA included) pretty much fall into two categories: those that can adjust and get on with their lives, and those that can't who later go back home. I'm not sure what people expect England to be: SA with more white people? How it is in the movies? It's England - everything here is how they do it. Some things may be similar to SA, but other things are completely alien (like their love for tea, for example). I understand that it may not be everyone's cup of tea (****), and that going back home may be the better option for them. There's no shame in that, either.
10 months into my second stint in the UK, and I'm enjoying it. Yes, it does take time to readjust, but once you're used to everything, it's plain sailing. I don't plan on staying in London forever (I live just outside Wimbledon at the moment - like every other South African ever), but it's where I need to be for now. I still miss SA, having spent most of my life there - my blood is green and gold. But for the foreseeable future, this is my new home, so I'll make the most of it.