@titchy
The BMA's position is always going to be based on what is best for the individual patient. Public Health isn't their remit or focus, quite correctly.
You've misunderstood the BMA's remit. The BMA couldn't give a monkeys about individual patients. They're a union, there to protect their members. Their remit is to advance the rights and needs of doctors, who they represent.
Now, I grant that very often doing the right thing by doctors will also be good for patient care, but that's incidental.
They're arguing for a six week interval because that's what a cohort of their members want. Those members are scared doctors, working on covid wards, who have had the first dose and want the second now. Which I understand: I'm a clinician who has had the first dose and is gagging for the second. But it's not a public health or patient care decision. It's not a sensible weighing up of the evidence or the broader picture. It's advocating for the people they represent. That's what unions do.
It's directly analogous to the various teaching unions arguing for section 44 letters or for teachers to be prioritised for vaccines. It's not about the broader public health picture. It's not really about the kids (although it might be dressed up that way to make a better argument). It's teaching unions promoting the interests of teachers, because that is the role of a union.
If the BMA are saying that it's because they're worried about the broader public health picture, or they're concerned about the general population, then that's to make a stronger argument. It sounds better than "Our members should be prioritsed for a second dose sooner, because they're doctors". It's just like, historically, they've argued that doctors should be paid more because that gives better patient outcomes. That might even be true. But fundamentally the reason they're arguing for a shorter dosing period or more pay is because they're a union, fighting the corner for their members, and not because they're an independent body making an independent assessment of the evidence.
I'm not criticising the BMA at all for this. But it's worth understanding their remit before deciding how to weigh up their position.