You may only purchase apps from a country's store for which you qualify. To download apps from the UK Store you would need to change the country of your Apple ID in the account configuration to the UK. To do that you must live in that country and provide a bank or cedit card from a bank in that country with a verifiable billing address in that country.
This site contains user submitted content, comments and opinions and is for informational purposes only.
Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site.