Posted: 03/03/2013 at 13:43
Thank you all for the wonderful responses and advice. Doveabove, like the rest of you, talks a lot of sense and it is true, I should have known better than to buy a supermarket plant, but it sang to me, so I was forced to!
Anyway, thank you all and just to update, I repotted the rose this morning, so that should take a bit of the water away, I had a thought it might be 'pot bound' to an extent. I used specialist rose potting soil, probably with lots of potash as advised above, and I shall let you know, in a few days, how we go on.
Thanks again, and may I say what a wonderful forum this is, full of nice people!