* Forex prime brokerage team set to double

* Bond to work from UK as global head (Adds further details about prime brokerage business in sixth paragraph)

By Steve Eder

NEW YORK, May 27 (Reuters) - Morgan Stanley (MS.N: Quote, Profile, Research) has hired Martine Bond, JPMorgan Chase & Co's (JPM.N: Quote, Profile, Research) global head of foreign exchange prime brokerage, and three key members of her team, a person familiar with the appointments said on Wednesday.

The additions are part of a wider expansion of Morgan Stanley's foreign exchange prime brokerage team, which provides clearing and other services for hedge funds' currency trading activities.

The team is set to double in size in the next year from its current 15-20 members, the source said.

Morgan Stanley, whose prime brokerage was hit with a wave of defections last fall following the Lehman Brothers bankruptcy filing, declined to comment, as did JPMorgan.

It has since seen some of those customers return and said in April that the balances of its top 50 prime brokerage accounts increased 10 percent in the first quarter.

Though it deals with hedge funds, the foreign exchange prime brokerage business sits inside Morgan Stanley's foreign exchange department and not within the main prime brokerage unit that was hit by the counterparty concerns last year.