Here's my subjective ranking:
1. Deepmind, Revolut, Deliveroo, palantir
2. Monzo, Facebook, Amazon, Google, thought machine, starling
3. Justeat, uber...
Edit: to be fair, it's not all bad. The new VP of Engineering is really excellent and he has already started making a big impact. Also, the work-life balance is good and the engineers are smart. The people are nice as well.