Airmiles tycoon to sue Coutts

Airmiles founder Sir Keith Mills has formally launched a legal action seeking compensation from the Queen&rsquo;s bankers Coutts over investments made in products offered by troubled insurer AIG.<br />&nbsp;<br />The case raises the prospect of the Royal Bank of Scotland owned bank paying out millions of pounds in compensation to Mills and other wealthy clients following the bank&rsquo;s advice to deposit savings in AIG Life Premier Bonds. Following AIG&rsquo;s financial problems investors have faced half of their investments frozen for two and a half years, with only face value guaranteed.