Have you tried? There were still single-arm, paid stage 2 trials recruiting in the UK in December (I can't remember which vaccine). I would've signed-up, but I'm already on the (placebo-controlled, unpaid) J&J stage 3 trial so can't take part in another. A stage 2/3 trial is still more likely to be effective than the homebrew approach, even after accounting for the 50% chance you've been given a placebo. As for how I got onto the stage 3 trial: I signed up here in the summer, and they contacted me in November: https://www.nhs.uk/sign-up-to-be-contacted-for-research

Sort of but not really. I'm an odd case as I had covid in April. I put my name with the NHS anyway in case they still want to try stuff on us survivors.

How's your health been since the infection if you don't mind the question?

I've been fine. I was one of the lucky ones who was almost asymptomatic.

They want a diversity of ages and races in vaccine trials. There's a lot more competition in some categories than others.