From my experience you can do everything online + post, except for the bank account. However the reality might have changed in the 3 years which have elapsed. There might be some new bank that lets you get away with it online.

However, the UK is moving in a strange direction as well. For a decent EU option, look at Estonia. Get a digital ID card from one of their embassies and you can use that with your computer to open a company and manage everything digitally.