I always use parkers, if I have any problems, they email straight back with info, their plants are guaranteed for a year, they will credit you with the money back. I had a fantastic show of bulbs last year, and hopefully will get the same this year.
I bought a bare root acer in the spring, which is now about 2tf tall and covered in red leaves,it was only about £1,99, plus several others at that price. I had 3 roses for a tenner, all bloomed and one now layered. I cannot begin to say how much I have in my garden from them! I have just bought several perennials that look dead now, but they are only sleeping and will be perfect next year. They do some really good bargains, I cannot fault them. I find the staff very friendly.
I could go on........
PS there is a 10% discount for GW subscribers.
PPS I have just remembered that the 100+ pack of primula small plugs that I ordered from Parkers, actually came direct from Jersey Plants.