Brief: Big Technologies Appoints Alexander Brennan As Chairman
April 1 (Reuters) - Big Technologies PLC BIGB.L: BIG TECHNOLOGIES PLC - APPOINTS ALEXANDER BRENNAN AS CHAIRMAN BIG TECHNOLOGIES PLC - APPOINTS MIKE JOHNS AS CFO DESIGNATE Source text: ID:nRSA9985Ca Further company coverage: BIGB.L ((Reuters.Briefs@thomsonreuters.com;))