I would imagine they mean 'which lorry'. Fera/NBU/whatever they're called looked at the genetic origin of the English hornets and there is good collaboration between the SG and York so I would imagine there's a PCR machine whirring as we type. However 'I know nothing!' as Andrew Sachs once said.

Yes, there was a lot of activity around Tetbury but there could still be Asian hornets out there somewhere.