I had two £5 vouchers sent to me (they have apparently sent me the catalogues for the last time as I haven't ordered anything for a while), so I made two separate orders for courgette and aubergine seeds - just under £5 each order, then added the free P & P code and both orders were accepted! I have enough seeds for this year, so I'm already sorted for next year - for free! Thank you T & M 8).
Tricia