[Tantalus39]

Check out this company for good seeds and plenty of them for a reasonable price. Have been tried out this year on our allotments by a couple of the allotment holders and they swear by them.

Tantalus

[mumofstig]

They are usually ok, and as you say at a reasonable price.
One year, I did get seeds that weren't for the squash I ordered. A bit disappointing when they take so long to grow, but have bought seed from them since with no problem.

[Auntiemogs]

I buy most of my seeds, garlic and onion sets from Premier.  Very good value, and excellent germination rates. 

[Mr Dog]

I'm probably in a minority on here but I stopped using them as I've had more wrongly labelled stuff from them than anywhere else - I once got 3 different types of tomato from a single packet of seeds, none of which was the named variety. I also found their customer service to be poor with often no reply to complaints.

[cc]

Never had problem with them. Very reliable but I buy of their eBay site, so I get my money back if I have any problems.