Hi SamT,
Thanks for your comments and tips!!...
Apologies if I confused you, - here in South Africa a person who enters data/information into a program on a computer is known as a 'Data Capturer' hence my using the word 'capture' - I will remember for any future posts!
I will have a look to see if there is perhaps any code as you suggest that could be causing the problem, failing which I will have to use two buttons to select the two sheets separately.
Thanks very much for your time - much appreciated!
Dave