Thank you all for your responses.
The good news is that I passed the practical.
The bad news is that I made a total fool of myself ..... my RT just fell to pieces, and in comparison to its standard when flying I would actually call my performance c**p. However, the examiner managed to seperate the nerves from the RT and said it was good enough (only just though) and quite rightly gave me a thorough telling off during the debrief because of some very silly errors.
I couldn't face the RT theory test after that, so I'll return tomorrow morning.