Why is Binance illegal in the UK?

I'm somewhat puzzled about the legal status of Binance in the UK. As a leading global cryptocurrency exchange, Binance has always been regarded as a reliable and secure platform for trading digital assets. However, recently I've heard reports that Binance is considered illegal in the UK. Could you please elaborate on this matter and explain why Binance is illegal in the UK? Is it due to regulatory issues, or are there other reasons behind this designation? Thank you for your time and assistance.