How do you deal with MLMs?

[Andyjc86]

So, the situation is, your driving down a fairly quiet motorway in lane 1. You are closing in on Mr or Mrs MLM plodding along in lane 2, whilst lane 1 (your lane) is empty.

What do you do next?

I personally continue in lane one, I know this is undertaking and wrong, however as far as I'm concerned I am maintaining my speed, and shouldn't need to move 4 lanes (2 in 2 out) to overtake.