(1) For the purposes of section 422, shares and voting power that a person holds in an undertaking ("B") or in a parent undertaking of B ("P") are disregarded in the following circumstances.

(2) Shares held only for the purposes of clearing and settling within a short settlement cycle are disregarded.

(3) Shares held by a custodian or its nominee in a custodian capacity are disregarded, provided that the custodian or nominee is only able to exercise voting power attached to the shares in accordance with instructions given in writing.

(4) Shares representing no more than 5% of the total voting power in B or P held by an investment firm are disregarded, provided that it -

(a) holds the shares in the capacity of a market maker (as defined in article 2.1.6 of the markets in financial instruments regulation);

(b) has a Part 4A permission to carry on one or more investment services and activities;