50mtrs or so behind you is an arrow painted on the road advising all road users need to filter into the left hand lane
Might I suggest you read up and refresh yourself on the Highway Code and who has priority
or should I forget the above and just use
MGIF ?
Come on...how far would you have got with that bus (+ other traffic) in front on single carriageway through 20mph roadworks? Ever heard of "forward planning"?
And yet you still wanted to risk overtaking/close pass potentially injuring or even killing an innocent road user
Learn how to indicate nobhead!