Maz
Guru
I do this filtering thing from time to time. I tend to ride in the middle of the oncoming lane when I can see far enough ahead of me. Also, as Gavintc said, you need an 'escape gap' in case you need to move back in sharpish.
Also, if there are (eg) temporary lights/roadworks ahead, look out for impatient motorists who decide to leave the queue by doing a 360 in front of you without looking.
Also, if there are (eg) temporary lights/roadworks ahead, look out for impatient motorists who decide to leave the queue by doing a 360 in front of you without looking.