I am probably wrong but it is my understanding that a certain amount of vaccine is left in the bottle after 4 doses are given but unlike Israel where they have very sensibly worked out how to squeeze every drop out to make it 5 doses per bottle our lot are just doing the 4 and throwing away the wastage. We could learn a lot from Israel's vaccination programme which is 24/7 and highly efficient versus our amateurish, lacklustre and and lackadaisical approach but as the nhs/PHE and politicians (local and national) are all trying to organise themselves you start to understand why it is going so slowly!
It’s odd, but your view of how our programme is going is vastly different to what I have seen with my own eyes.
Edited to add......
Do you think we could learn to exclude a large section of society from the programme like Israel has
Forgot to add, yes you are wrong about how the vaccine is drawn, it’s one dose per vile.