The OP's racist whingeing makes it doubly hilarious that the great conservative George Osborne's wife is one of the people who has got very, very wealthy from her stake in Deliveroo.
As to the 'no wonder it didn't take off in Europe' off-gassing, there's Deliveroo in Belgium, France, Germany, Ireland, Italy, the Netherlands and Spain. Uber Eats is in France, Spain, Italy, Switzerland, Netherlands, Belgium, Sweden, Ireland, Luxembourg, Poland, Portugal, and expanding into Germany.
I live in London and often get groceries via Zapp, which is on Deliveroo. You know, OP, for my Natoora fruit and veg and organic Lidgates meat (see, I'm one of you, not a fat, junk food scoffing poor person!!!). Better than Ocado, because I can get the delivery in 30 minutes versus waiting two days. I give an extra big tip if the driver is wearing a balaclava.