See post #31 in this thread for the basics of a derogation. PM me and I’ll give you my phone number for specifics. I got a derogation through the ex FWAG advisor (for delayed establishment last autumn) we use for CS schemes as he speaks the language the RPA might understand.You make an interesting point about resowing. I asked a ex FWAG adviser about not sowing AB15 (yes I know I should have asked NE technical staff). The reply was that the prescription says establish by mid September. If I sought a derogation to delay until next Spring the advice was NE would be able to and might ask to recover the payment made for the 2021 year as the prescription was not met. However, if the seed is sown and an invoice is on site and a record of cultivations held then even if fails to establish satisfactorily have met the prescription.
I note in this thread commendable attempts to establish a thick clover sward for the benefit of rotation etc. I equally interested in meeting the scheme rules?
So I shall be really interested in how you fare with seeking a derogation. I know Tesla I ought to ask myself. I might now but it seems to take an age to get a reply from NE.