i'm sceptical that it''s Kenny Bee, though it looks vaguely like him, on the left. The credits for the three decorators are Ah-Bo, Ah-B, and Ah-Ching. The appearance is about ten seconds and consists of just watching in silence as Karena Lam and Angelica Lee arguing. As dire as Kenny's financial woes these days, did he really sunk so low?

The three decorators (the third one is deep in the shadows)

Having seen some of Mr. B's video productions from around this period, I can't say I see a resemblance in either of the two foreground workers, who both look too young. Perhaps he's the shadowy guy in the back? (though that seems doubtful too).

Agreed.
If no one objects I will remove shortly.

Removed.