Why?

Hi! I am new here and I have an question to you. I am sorry if it is a wrong section to ask it, but have no idea where I could find an answer or feedback. I want to start up my business and registrate it in the UK. When I was trying to understand how is it possible for me, I found t is a company which could help to register/open business in the UK. It has an app, so I will have access to my online business account. how I understood and something more. So, did you hear about it? Or maybe you have other variants to open business in the UK or other services? Thank you in advance, janetjon