The CAA gives the option for EASA licence holders to be issued a parallel UK licence free of charge if a citizen of the UK. As a result, I hold both EASA and UK ATPLs. I suspect many EASA ATPLs issued by the CAA are also mirrored UK ATPLs.
And if you're applying for an ATPL issued by the UK CAA over the next year - top tip. Tick the box!