Up until very recently if an accident happened When a motorcyclist was "filtering" the motorcyclist was always to blame.
Because of a recent court case where a car driver was prosecuted, fined and ordered to pay damages for knocking a motorcycle over whilst the motorcyclist was "filtering" this is no longer applies!
After driving for over 47 years, a lot of it in and around London I have never "been made to swerve" in the circumstances described in the Question, bit of sour grapes me thinks!