Williams joins Marsh; Towergate completes restructure; MarketScout: Renewals flat; JLT Re hires Holtmeier; Citigroup divests; BHSI expands D&O; Good time Duperreault; Daum returns; RSG launches MGU; National General motors ahead; XL launches VC fund; Parker promoted; Axis acquisition; IGI upgraded; Garg back at AIG; Icat adds £8mn SPS