MIR 2.8.8

A Recognised Body which permits its Members to allow their clients to have Direct Electronic Access to its trading facilities must:

(a) set appropriate standards regarding risk controls and thresholds on trading through direct electronic access;
(b) be able to identify orders and trades made through direct electronic access; and
(c) if necessary, be able to stop orders or trades made by a client using Direct Electronic Access provided by the Member without affecting the other orders or trades made or executed by that Member.