NATIONAL GRID PLC

The Board considers potential conflicts of interest and Directors’ time

commitments when approving appointments to the Board, including

any subsequent external appointments. On appointment, Directors

confirm that they are able to devote sufficient time to discharge their

duties effectively, including attending and preparing for Board and

Committee meetings, and undertaking site and office visits. Directors

are required to obtain prior Board approval before accepting any

additional external appointments.

During the year, the Board approved new external appointments only

where it was satisfied that these would not impair the relevant

Director’s ability to perform their role.