I hope it performs as well for you as it has for me and that you enjoy the beans 
It won the RHS trials in '99. We grew these in our new vegetable patch, out of which we'd had to dig quite a few tree roots from the mature ash tree nearby and the soil is free draining sandy loam and was quite hungry. I didn't have a chance to dig a bean trench but dug plenty of well rotted manure into the soil before planting out and mulched with the same later. I got 99.9% germination in the coldframe and planted out I think in early June. They grew away well and started to crop late July. The quality of the first flush of beans especially was superb - real show standard - I felt sad that I didn't still live in the vllage where I used to show my fruit and veg - I'd have had a chance to compete with the 'old boys' with those beans.
After the first flush I sprinkled a little potash around the roots and watered it in well - as I said the soil is very hungry and also they'd had a lot of nitrogen from all that manure.- after that there was no looking back and they cropped steadily until mid October when they tailed off. In August and early September we watered every day (it was dry then, remember?) (we have a water butt which takes the water from our shower) and had absolutely no problems with setting even though as you know there were few insects about this year - I noticed they were regularly visited by a variety of solitary bees.
I'm really looking forward to growing these beans in what I hope will be a more reasonable season - but I'll need to get a bigger freezer 