Iwas told yesterday that these are currently available and that all I need do is go to medical centre and ask for them. Is this correct and has anyone done it? 

I just log into the Health Service page, same as I would for the Doctor or Nurse and if you are eligible (right age range etc.) the option is there.

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Having tried many times to make an appt online, I think it'll be easier if i go to Dr on thursday morning and ask him.  Thanks for responding, Drax