The advice from our driving school and driver standards unit is not to use the nearside bus lanes on B&T as drivers expect us to overtake then on the offside which allows them to go nearside (and technically breaching the bus lane). In that respect it is sound advice.
Sound advice indeed, but fails to take in to account that the closer you get to Central London, the more people choose to pull in to the middle of the road or beyond, to let you past!