I got a text message from the doctors saying that I was eligible. I called and asked why because I am 40 with no underlying health conditions- apparently it was an error, as I suspected .
I booked to get one at my local pharmacist as I do each year. (I pay for it). It was a week or two before the widespread recommendation that it is important, and I do it to try to avoid being off work for a week with (actual) flu. For 12 quid, I think it is a good insurance policy. I had travel vaccines for Nigeria and they were hundreds, so 12 is nothing.
When I got there I was told that many people don't qualify for a free one so the surgeries were sending people to the pharmacies. The pharmacies, however were not able to get any additional allocation of the vaccine, so were struggling to administer it. When I went in, they were honouring booked appointments but not taking any more. At the time boots weren't taking bookings for the under 65s. It may have changed now.