Over here, it does vary from health authority to health authority, but the general rule is that you aren't given it unless you are in an 'at risk' group i.e. asthmatic, diabetic, over 60 (or is it 65?). You could get the vaccine privately (pay for it).
My son (14) was given the jab, I asked about my other son having it, but the nurse said that as he was not in the 'at risk' group, he did not qualify.