vernon said:
I'd not be bothered about wheel sucking unless the same rider was doing it to you every day.
I think the problem is that wheel sucking (I've only now learned this term) isn't a common practise on the daily commute in Edinburgh.
I've been cycling in Edinburgh, both for commuting & leisure for over 16 years and never been 'wheel sucked'. I've seen cyclists slipstreaming one another out on the open roads of East Lothian, but not seen it done on my daily commute, and I've been on my current route approaching three years.
In hindsight (being 20/20) I now see what he was doing. I still don't appreciate it; having to worry about him right up my back along with potholes, cars etc. etc. But I now know what he was trying to do (rather than thinking he was a mentalist) and would tell him to quit it.