Compile a list of all the UK airfields and their phone numbers etc where you would be happy to work
Phone them and explain your situation - and ask for a liaison visit.
Take a notebook with you to the liason visit, wear smart clothing, wash behind your ears and wipe each shoe on the back of your trouserleg before going in - you only get one chance to make a good impression.
Try and mug up on the airfields operation beforehand - your family friend will be useful here. Ask any question you like on the liaison visit, don't be afraid to ask a 'simple' question.
Do NOT leave without making a note of the name of the actual person to send your CV to at each unit.
That should keep you out of mischief for the summer