Strange moth - ID help please

Strange moth - ID help please

Observation - Strange moth - ID help please - UK and Ireland. Description: This may be just an ordinary moth/butterfly on a windy day but it twice settled very briefly in this manner & this was just a quick snap before it flew off again. I thought possibly a Lappet but have to say I really don't know. Suggestions gratefully rece

This may be just an ordinary moth/butterfly on a windy day but it twice settled very briefly in this manner & this was just a quick snap before it flew off again. I thought possibly a Lappet but have to say I really don't know. Suggestions gratefully received!