Nomura (8604.Tis to buy Tricorn Partners, a London corporate finance boutique. The Japanese bank is making the acquisition to beef up its corporate broking business. It is currently corporate broker to eight British companies including Tesco. The value is not disclosed.

Abu Dhabi’s sovereign fund is serious about mitigating losses it faces from its purchase of securities in Citigroup (C.N) in 2007. Abu Dhabi Investment Authority has filed an arbitration claim against the US bank alleging  misrepresentation. It wants Citigroup to rescind on the investment agreement or pay more than $4 billion in damages.

In Australia, BHP Billiton (BHP.AXoffers to buy Queensland’s coal freight business. The state government of Queensland last week announced plans to float the business, a move which wasn’t popular with miners and rival rail groups who had expected the business to be separated.

For more on these stories, and the rest of the latest deals news from Reuters, click here.

And elsewhere (some external links may require subscriptions):

A group of MPs will argue that state-owned RBS should not be allowed to help finance Kraft’s bid for Cadbury, the FT says