May 11 (Reuters) - Rathbone Brothers Plc
* Says total funds under management were 35.8 billion pounds at end of the first quarter.
* Says total net growth of funds under management in investment management was 318 million pounds.
* Says this comprises net organic growth of 248 million pounds and acquired inflows of 70 million pounds.
* Says funds under management in unit trusts increased 10.0 percent to 4.4 billion pounds.
* Says fee income of 46.0 million pounds, up 22 percent. Source text for Eikon: Further company coverage: (Reporting By Simon Jessop)