No. It's not.
The theoretical stuff is covered in the JAA written examinations - but there's also a practical test - whereby you simulate flying a virtual Cessna 172 from one airport to another and make all the appropriate radio calls as if it were a genuine VFR flight in UK airspace.
That test HAS to be completed before you may taxi for departure on the UK CPL flight test.
Worth while for what you want? Probably not.
Do you have a choice if you wish to fly a UK test? Probably not.