That's deliveroo. Uber is rather your local mcdonald's. My experience is that the service of Uber eats is disastrous. They hire drivers that do not speak a word of english and more often than not don't want to step out of their vehicle. Deliveroo has an OK service.
In London, pretty much all restaurants are on both.
It was actually crazy when Uber Eats appeared last year or so. In a few months they captured all the restaurants from Deliveroo and another truckload of restaurants/chains that never did delivery before.
That should be taught in business class. The power of a brand, destroy your competitors and double the market in a few months.
Realistically if a restaurant uses one delivery service then it's pretty easy to start being on another. So as I've seen most restaurants have one or more such services plastered on their walls.
It's the opposite for my region (DC area). Lots of high-quality restaurants that otherwise don't deliver are on Uber Eats, while GrubHub and Deliveroo is mostly bad fast food and pizza.
Sorry, I was mixing it up with Eat24 I think (which is now owned by GrubHub anyway). I do use Deliveroo sometimes when in Europe, which might by why I mixed it up.