A buddy sent me a video earlier, he was walking through London at about 10:30pm (so the pubs are closed) and the streets are literally packed with people on a night out, like walking through a mid day festival with no distancing and very few masks. I'm in Wales, everything is on "local" lockdown here and we're not allowed to really mix at all as per the rules, meanwhile in London the most densely populated area in the country they are partying like tinned sardines.

If anyone is in need of some levity, South Park's Pandemic Special might be worth watching. It's free, it's ridiculous, and it's funny enough. There is also "Make Love, Not Warcraft" which is always fun and free.
https://southpark.cc.com

Does Wales have to adhere to the “Rule of Six” and 3-Tier System of rules? Forgive my confusion, I just know there are variations of the rules depending on where you live.

We didn't have a tiered system but all of South Wales has been on "local" lockdown for a while, you're only allowed to leave your county for work or school but you're not allowed to shop or eat in other counties. We had a rule of 6 but also not allowed to mix households, at pubs/restaurants no mixing between different households at the same table. As of Friday this week they are increasing restrictions though, two weeks of effectively full lockdown again with non-essential businesses closing.

Unsure if the tiered system will happen in Wales, I've not seen anything about it but our restrictions have for a while already been much more strict than those in England.

Thank you for the clarification. I hope the 2 week full lockdown accomplishes its goal.