Hi Mark - the answer is yes. You may be aware that Yalding is an HDRA garden. Join them (then you can get free entry into Yalding OG), plus 10% off orders with the Organic Gardening Catalogue. A large portion of the seeds are not organic, but the company have sourced these seeds from more ethical growers. Suffolk seeds are also organic?
A number of other catalogues sell organic seed - Tuckers, T&M, can't think what the new name for VidaVerde is - real seeds? but they grow organically although they haven't got organic certification (too costly was their reasoning).