Exemption may be on the Theory subject if you have more than 3000 hours on Aircraft above 30 000 kg and at least 1500 hours is as Captain.
Otherwise 14 ATPL Theory Exams.
Class 1 Medical
CPL Skills Test *
Instrument Rating Skills Test*
* As an alternative you may do a Type Rating on a CS25 Aircraft and skills test observed by the UK CAA Examiner. You can be exempt the Type Rating course depending on how many hours you have on the Type.
Remember you need to have at least 500 hours on a CS25 Aircraft for a JAA ATPL.
W1