Craigeedee
Most GPs won't charge you for access to your own records, they may charge you the cost of making copies of anything you want to take away.
Write to your practice and they will arrange a time for you to view your records. Alternatively, just arrange an appt with your GP and discuss the issue with him / her. The GP may well be sympathetic to re-evaluating a diagnosis of juvenile asthma that is non-recurrent .