This is about seed sources

If you want to start growing Meconopsis from seed then both the ALPINE GARDEN SOCIETY and THE SCOTTISH ROCK GARDEN CLUB offer extensive seed lists to members. For rare items or seed collected in the wild there is often only a small quantity of seed available. If you donate seed you get a few extra packets. You are asked for a long list of alternatives but you will always get some seed from the top of the list. 

The address of the AGS is AGS Centre, Avon Bank, Pershore, Worcestershire WR10 3JP. U.K.  EMAIL is  ags@alpine gardensociety.net  The subscription is £32 a year. This includes a really excellent Journal 4 times per year (approaching 500 pages for 2014) with superb colour plates all the way through.

The address of the subscription secretary of the SRGC is 10 Quarry Avenue Acklington MORPETH Northumberland NE65 9BZ U.K. The subscription is £18 per year and includes an excellent journal twice a year full of colour images and original articles by experts. 

Very few seed houses offer Meconopsis. A firm that offers several species is Plants of Distinction, Abacus House, Station Yard, Needham Market, Suffolk IPO6 8AS.

 The only other one I can find is DOBIES which offers LINGHOLM. This is a wonderful fully perennial big blue poppy that reliably sets seed. It is available in their current catalogue at 70 seeds for £3.59. This normally germinates well to a standard spring sowing and 70 seeds is generous and should provide plenty of plants. If you yearn a perennial blue poppy in the garden this is by far the best choice. Even in southern U.K. in a light shady position on well enriched soil because it is tetraploid and thus very robust, it should be content and with more than one seed grown plant it should set fertile seed.