Allen & Gledhill (A&G)has boosted its disputes team with the hire of five partners from Rajah & Tann (R&T) and the chief executive of the Singapore International Arbitration Centre (SIAC). The team joining A&G from its Singaporean rival include Chong Yee Leong, who heads R&T's international arbitration and construction practice and Chong Boon Leong, who specialises in power and telecoms disputes.