Hi Martin,
Thanks very much for your help.
I had come across this technique as a possible solution however it didn’t seem to be appropriate in my case as my texture is a graphic repeated pattern. Any inaccuracy in the distortion would be easily spotted on my sphere!
This time I modelled my way around the problem but I can see myself using the polar co-ordinates technique alot in future!
Thanks for the tip regarding cylindrical mapping and thanks again for taking the time to respond to my post.
Kind regards,
Nicol