If your under 26 try for the military
Age limits are under 26 at commencement at BRNC for the RN (95% of RN pilots are RW right now) and, I think, under 29 for the Army/AAC as an officer. You can also join the Army in the ranks, and apply for and get a transfer to the AAC for pilot training, but that's about four years minimum service before you can apply for the transfer.
The application/interview process will take about nine months from first enquiry to joining.
More on the Mil forum, where there is an extensive sticky on aircrew applications.
In case you think I'm anti-RAF - the age limit is under 24 on entry for officer aircrew. The RAF and the RN only have officers in the pilot role.