Hacker News Reader

I did that from Italy, wouldn't do it now because of the uncertainty related to brexit. We'll see in the near future.

Don't you need to have physical presence in the UK to open a company?

You just need a postbox/business-address which is usually hosted by the service provider you use to do the UK registration and all that.

Note that a Limited doesn't free you from having to deal with the local authorities (Gewerbeamt in Germany, tax office, etc).