I have looked at the CAA Website:
The EASA conversion deadline of 8 April has been delayed.
Due to legislative delays in Europe, the UK Civil Aviation Authority (CAA) has introduced an exemption to allow UK General Aviation pilots to continue to fly 'EASA' light aircraft under existing National pilot licensing and medical certificate arrangements.
According to the Aircrew Regulation, if you wish to fly any EASA registered aircraft then you must hold an EASA licence and relevant medical. The deadline for GA pilots converting to an EASA licence was 08 April 2018, which would have restricted National licence holders to 'Annex I' (previously referred to as Annex II). However, the UK CAA have issued an exemption delaying this deadline until 07 April 2020, in certain circumstances.
Either way the holiday is over and the date for licence conversion was not extended beyond April 2018.
- You cannot convert an NPPL licence that was issued after 07 April 2018.
- Microlights and gyroplanes cannot be converted to an equivalent Part-FCL licence.