Most of our business is done it the US. We just launched a UK division. When we identify a UK visitor to the US site we will serve them a different variation of the home page. The URL will remain the same: www.company.com. But the page will give the user the option of setting the UK site www.company.co.uk as their default.

My question is, the only way that google.bot or the others would crawl this is if they had a UK IP address crawler? Does anyone know if Google uses US crawlers for US sites and UK crawlers for UK sites, or could their potentially be a UK google crawler that crawls a US site?

Has anyone encountered any search engine issues employing this type of page that reads for a UK IP address?

Thanks!

Just detect the bot either by user agent or by IP and show them always the US site. That way you keep them out of any page swapping or redirections which may be missunderstood as a cloak.