Confusing and uncoordinated.
I received a letter from NHS. I booked online. Couldn’t get a nearby centre but that’s OK I have a car. Booked for appointments 1hrs drive away. One day before my first appointment I get a text from my Doctor's surgery inviting me to make an appointment with them. There is an option to say I have made other arrangements so I press that button. I am now listed at the surgery as a vaccine refuser. It now seems clear that some other organisation is offering a parallel service without coordination with the NHS / GP service.