Is bitcoin legal in the UK?

As a concerned citizen and potential investor, I am wondering about the legality of Bitcoin in the United Kingdom. I understand that cryptocurrencies are a relatively new and complex field, and I want to ensure that engaging with Bitcoin would not put me in legal jeopardy. Could you provide a clear and concise answer to the question: Is Bitcoin legal in the UK? Additionally, if there are any specific regulations or guidelines that I should be aware of when using Bitcoin in the UK, I would greatly appreciate your insight.