UK Did your DNO approve MP2 grid-tied UPS 'island' install?

Hi UK Victron MP2 fans.

Did any of you get DNO approval for making your grid-tied system full UPS / 'island mode’ ready, without fitting an additional incoming grid feed isolator, to prevent back-feeding after a power cut? (MP2 has an inbuilt automatic grid disconnect for when the grid feed fails)

Thanks for your help.