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External Data Source

Source

Regular Expression
^\s*\(?((\+0?44)?\)?[ \-]?(\(0\))|0)((20[7,8]{1}\)?[ \-]?[1-9]{1}[0-9]{2}[ \-]?[0-9]{4})|([1-8]{1}[0-9]{3}\)?[ \-]?[1-9]{1}[0-9]{2}[ \-]?[0-9]{3}))\s*$