Not at all. A BCPL(R) was issued on the basis of a UK PPL. It currently translates to a JAA/EASA PPL and under EASA rules, a PPL holder will be able to give instruction and conduct tests and be remunerated, so nothing lost or gained apart from the Blue licence cover.
Except that R/BCPL/FIs will
not have passed the CPL examinations, so their livelihood is under threat from this €urocrap.
No-one actually know what the Kölunatics are actually proposing for 'licence replacement' for those holding national licences. But my cynical view is that these CAA letters are trying to persuade people to change to JAR-FCL licences in the hope that the scale of the problem might then go away....
It won't. The CAA needs to be proactive
and to come up with something more positive. Personally I consider that the current national licence should be replaced with the nearest EASA equivalent free of charge - as it's a non-safety related regulatory requirement. R/BCPL/FIs should be given EASA CPLs bearing national restrictions identical to current R/BCPL/FI licence privileges. Same with the IMCR - just issue an EASA IR restricted to IMCR privileges and valid only in UK airspace. Not hard, is it? But it might require a change to the Basic Regulation, so that's why the CAA should be proactive - and securing political backing.