Do cryptocurrencies need to be registered in the UK?

Could you please elaborate on the question of whether cryptocurrencies need to be registered in the UK? With the increasing popularity and use of digital currencies, it's crucial to understand the legal framework surrounding their regulation. Do all cryptocurrencies fall under the same registration requirements, or are there specific exemptions? How does the UK's Financial Conduct Authority (FCA) view cryptocurrencies, and what measures have they taken to ensure their safety and compliance? Additionally, what are the potential implications for businesses and individuals who operate with or invest in cryptocurrencies in the UK? Clarifying these points would help us gain a better understanding of the legal landscape for cryptocurrencies in the United Kingdom.