It's EASA's position that a PPL can be exercised up to the privileges of a LAPL by complying with the LAPL rolling currency requirement. Has the UK CAA taken a different view?
No it isn't. A PPL can be exercised within LAPL limits if the LAPL element of the Part-MED certificate is still valid, but the licence holder must still comply with Class Rating revalidation criteria. LAPL 'rolling validity' only applies to genuine LAPLs, not to PPLs restricted by virtue of Part-MED certificate validity.