Why do I ranking higher worldwide than locally?

[Txtlocal]

Hi all,

I run txtlocal.com - a UK based website with UK IP address using a .com TLD (we do have international customers too, so don't use .co.uk as our main TLD).

One of our main keywords is "SMS Marketing". Can anyone explain why we rank on page 2 of Google.com and Google.com.au for this term, but only page 9 on Google.co.uk?

Google knows we are a UK site because we ARE listed in a Google.co.uk "Pages from the UK" search..... so why oh why do we rank so lowly in the UK, yet so high worldwide?

Many many thanks to anyone who can come to my rescue on this. It's been driving me crazy for months now

Thanks,

Alastair
Txtlocal