Is a Visa to Hong Kong needed?

DEAR SIR,

I am a visitng professor at UEL east london for a year and holding a uk visa . So i am going to hong kong for a conference from 24-28 may 2011 depart from london-kuala lumpur then to hong kong and retrun back to KL then coming back to london.

do i need a visa to hong kong?

thank you.

Fauziah