For invoices / payments to EU (and non-local) suppliers, if the VAT code is one of the EU purchase ones, we take it that the reverse charging applies.
In that case, Net goes to box 7, box 10/11 (as it currently does). Take a 'Notional' VAT amount at standard ('A', currently 20%) rate, which goes to box 2, box 4 (effectively cancelling out). The breakdown of boxes 2 & 4 should also show these transactions, with the 'A' rate.
If I Am A UK Non-VAT Registered Business