UK-based R&M, itself a takeover target, last week rejected DCAC's informal approach to take over the business, just weeks after it agreed to sell it to Schroders for 230 million pounds ($303.21 million).

R&M shareholders will vote on the sale of the business, which manages assets worth 42 billion pounds, to Schroders at a general meeting on Dec. 13.

R&M declined to comment on DCAC's move to end talks. DCAC had proposed to buy R&M's unit at a "higher value" than Schroders.

Last month, R&M was approached by rivals Premier Miton Group and AssetCo for a possible buyout of the entire firm.

The fund manager had said any potential deal was conditional on it completing the sale of its pensions business.

($1 = 0.7586 pounds)

(Reporting by Sinchita Mitra in Bengaluru; Editing by Anil D'Silva)