what was your final gravity when you bottled? I haven't used Windsor in years but am I right in to remembering it does not attentuate as well as other yeasts, leaving a higher malt residual ? This could be one cause of the sweetness.
There has been quite a bit of talk on the yeasts that brewers have used to make this recipe. Suggest you re-read the thread to get what is really a bit of diverse comment. I like the Irish yeast but I'd be interested in trying some other northern English yeasts for variation.
If you don't have it, visit the Wyeast site and get their yeast guide - it lists all their yeast and which yeast suits which styles. There is a fair amount of interchangeability with some yeasts eg Irish and German Ale yeasts pretty much usable in the same styles.
I think I will have to use one of the Wyeast yeasts next time. Seems to be more variety: high medium and low attenuating yeasts to suit the style. Thanks for the advise.