The British Medical Association is the trade union and professional body for doctors.
Public Health England is a government body.
I know which opinion I trust more when it comes to how a vaccine must be administered especially when that opinion matches the vaccine manufacturer.
If this was the right thing to do, how come no other countries are doing it?
The problems will come further down the line due to people believing they are more protected than they actually are. That applies even after they eventually have their second jab because the starting level of protection will be lower than has been tested by the manufacturer.
This is why the USA are against it -
FDA explanation