I've just looked at U
ber's UK terms and conditions and, as far as I can make out, under most circumstances I'll need to sue the driver and their insurance company (or the restaurant and their insurers in the case of Uber Eats) rather than to pursue Uber itself.
What the driver's or restaurant's insurers might do is another question, but I'd need to sue the driver or the restaurateur.
Obviously it may well be different in the US but, given Uber's position that its drivers are independent contractors rather than Uber employees, I'm not sure it's that unreasonable.
I mean, can you really hold Uber responsible if a restaurant inadvertently contaminates a customer's meal with nuts after the customer has made the restaurant aware of their allergy? It's the restaurant owner who's responsible for what goes on in the kitchen, I'd have thought, rather than Uber.