.co.uk or .com?
209.85.227.104
and
209.85.227.147
respectively.
Those are IP addresses not web addresses. And .com isn't different to .co.uk - you just got a different IP address for each when you did a single lookup, both will round robin to one of the following addresses:
;; ANSWER SECTION:
google.co.uk. 259 IN A 209.85.227.147
google.co.uk. 259 IN A 209.85.227.103
google.co.uk. 259 IN A 209.85.227.104
google.co.uk. 259 IN A 209.85.227.105
google.co.uk. 259 IN A 209.85.227.99
google.co.uk. 259 IN A 209.85.227.106
;; ANSWER SECTION:
google.co.uk. 77 IN A 209.85.146.106
google.co.uk. 77 IN A 209.85.146.104
google.co.uk. 77 IN A 209.85.146.99
google.co.uk. 77 IN A 209.85.146.147
google.co.uk. 77 IN A 209.85.146.105
google.co.uk. 77 IN A 209.85.146.103
;; ANSWER SECTION:
google.co.uk. 219 IN A 209.85.229.147
google.co.uk. 219 IN A 209.85.229.99
google.co.uk. 219 IN A 209.85.229.104
(They may have other ranges as well but you get the idea)