An American woman living in the UK has shared three big culture shocks she's experienced since living in the country, explaining three things that are frowned uponto do here. Moving to a new country and making it your home is a massive decision that comes with a long list of new challenges.

Many people should expect to experience major lifestyle changes, life admin and more to add to the "to do" list - even if learning a new language doesn’t need ticking off. While the US and the UK speak the same language, there’s a vast difference in our culturesand the way we live our lives.

After all, we all live by different rules and regulations. This became especially apparent for an American woman named Katie, who has taken to social media to share the new differences she's learnt since moving to the UK.

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In a recent TikTokvideo, she went on to share three things that feel "illegal" to do here. While the things on her list aren't actually illegal, they will make you frowned upon by locals, according to her.

"What's up, I'm Katie. I'm an American living in the UK, and here are three things that feel illegal here but aren't illegal," Katie said at start of her video before jumping in to her list.

Warning: Below video may contain offensive language

"Alright the first one is not doing the little, like, hand wave thing when another car stops to let you go when you're going down, like' a narrow road," Katie said.

For this, Katie refers to the common practice among drivers to quickly wave "thank you" to the other driver that lets you pass them on a narrow road. The other driver then commonly waves back as an acknowledgement; however, Katie claimed it felt illegal to not wave in these situations.

"That's illegal. It's not actually illegal, but it does, it feels it," she said. "That one actually might be illegal, because when I stop for other people and they don't, if they don't do it... you s**g.... I don't think I'm using s**g right."

"The next thing that kind of feels illegal is filter coffee, and they don't really have it here, and they don't really like it," Katie said, explaining that she's previously been called "posh" and "chavvy" for drinking filter coffee.

She then went on to mark another difference with British coffee culture compared to the US, and that is the lack of coffee creamer, which is a substitute for milk or cream that is added to beverages like coffee to provide sweetness, richness and sometimes an enhanced element of flavour

"Like, they only put milk in. But they don't have half and half, which I use every day in the States," Katie continued, referring to another popular dairy product made from a mixture of equal parts whole milk and light cream.

"Every morning, I pour a little bit of milk and little bit of single cream into a cup and I mix that together and I make my own half and half," Katie admitted.

She jokingly continued: "It's not the life I want to live, but that's what I'm doing. That's what I'm doing and I'm ashamed, I'm embarrassed, and I wish that I could just drink milk in my coffee."

"And the third one is not being a tea drinker," Katie revealed. "You have to drink tea and I like, I do like tea. But I get asked, in my office, I get asked 10 times a day if I want a cup of tea, and people are, like, so lovely about it and everybody makes each other [a] brew."

"I just think it's really sweet that people ask, so I'm gonna say yes. So you can't say 'no', that's illegal," she said.

People quickly took to the comment section of her video to share their thoughts, with many Brits agreeing with what she had to say.

One person shared: "I'm a Brit that hates Tea, I know what you mean. Also, half and half in Wales means half rice/half chips."

"Love this - I’m a Brit that doesn’t drink tea, only coffee, but black. Also the hand wave thing, omg yeah, feels illegal," a second person said.

Another person went on to say: "Nah, if they don't say 'thanks' you have to say 'you're welcome' in the most sarcastic way you can."