Cambridge, FWIW, seems to be mostly individual colleges rather than the University itself. Given the size (and presumably diversity) of their endowment assets[0], I don't find this much of a surprise.
I'm guessing these are just the ones that got caught. I would be surprised if the London Universities e.g. Imperial, LSE would miss out on doing similar things with their funds.
[0] e.g. Trinity ~£1bn per https://www.trin.cam.ac.uk/alumni/giving-to-trinity/annual-r..., Gonville and Caius ~£150m per https://www.cai.cam.ac.uk/alumni/campaign-brochure/the-endow...