Certainly remove anything dead or weak with impunity - as for the rest of the plant, you're supposed to prune back a bit after flowering, but if it looks terrible, I'd risk it and take more off to get a good shape. But then I always do risk these things with run of the mill, relatively inexpensive and readily available plants - as far as I'm concerned, if its looking tatty or shapeless or not contributing to the general beauty, then it gets a good chop on the understanding that I'll replace it if it doesn't do better, lol! Never had a loss yet though.

Thank you Bamboo. Your right, if it dosn't survive i can always replace it. So the chop it is. Think i will leave the job until tomorrow as it is just too hot for me today. Supposed to be a bit cooler tomorrow. But then its back to cool temperatures again. Poor plant's. They must probably be so confused.

Yea, they're not the only ones - working in a coat only 9 days ago, now it's too hot to work outside at all!