 At UOB's 65th annual meeting in April 2007, Wee stepped down as the bank's chief executive officer and was succeeded by his eldest son Ee Cheong.He remained as chairman of UOB, which he had grown into Singapore's largest bank by market capitalisation with more than 500 branches and offices in 18 countries.In 1969, Wee was appointed to the Economic Development Board and the Currency Board, and as chairman of the Singapore Science Centre board the following year.