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There isn't proper way as you want it. You can make .com and .co.uk country preferred with geo targeting: https://support.google.com/webmasters/answer/62399 but this doesn't limit indian users that type english queries to see your sites in SERP. This is best way IMHO. If you need true protection against indian users then you need to make some changes. You can get list of GeoIP database: http://php.net/manual/en/book.geoip.php and based on this code to give users access or stop them. BUT this is very risky in real world since all bots comes from worldwide. Example - if you disable US IPs on .co.uk then you will stop GoogleBot visiting your site too. Also Roger will be stopped, Bing and many other bots. No bots - no ranking... This can be recognized as sneaky redirect. So i don't recommend you to do this geo ip limitation without calculating all pros and cons of this.