Well living in Essex I'm a bit short on interesting terrain, & as far as lovely singletrack winding through bluebell carpeted woods goes, it's all footpaths & nature reserves (Danbury & little baddow)I was riding through some of them yesterday afternoon,if there is someone walking the dog I/we ease up on the speed & often pull over to let them pass ,say hello & comment on such lovely (or crap) weather,sometimes you hear some tutting & once in a while someone a bit more vocal to which I've suggested that they shouldn't let it spoil their day,,then dropped a couple of gears & shot off as fast as my occasionally jelly legs would take me.as for night rides well then the world is of course your lobster. at the of the day we don't leave any litter about the place or break any fences and we avoid the most sensitive areas when it's likely to be a bit soft & squidgy under foot/tyre so as not to churn it up, and after skimming through this thread I now feel ever so slightly naughty..which i quite like.