Interesting article on the Beeb website regarding Skyuber. As you can guess from the name it is an uber-alike pooling app that allows flight sharing.
Catching a lift on a private plane - BBC News
This is basically cost sharing... which is legal, however the advertising of flights for cost sharing is not strictly legal.
https://www.caa.co.uk/default.aspx?c...0&pageid=16888
A flight can now be advertised in advance, but it should be made clear that it is a cost sharing flight, and not commercial air transport under an Air Operator’s Certificate (AOC), since it is an offence to advertise the sale of a public or commercial air transport flight without being in possession of an AOC.
This aims to allow cost sharing between friends and colleagues and not to provide an air taxi service to members of the public.
Can't see the CAA allowing this in any shape or form in the UK. Even if they did, it would only last as long as it took for the first 45 hour PPL to fly a group of skyuber pax into the side of a mountain in IMC.