I don't know Sparkly, but I wouldn't have thought this was a particularly busy time of year for seed companies.
I don't tend to order seed from T&M, as you can usually get their full range from garden centres.
The most efficient seed company I use is Moles Seeds (
www.molesseeds.co.uk).
Admittedly they are wholesale, but even at busy times, I get my seeds by return of post.
valmarg