I got some good ones from GAP ages ago, still going strong. Also, M&S.
I want to try then on though. The fit is really important with trousers, particularly as the reason I'm buying new work trousers is because my current ones don't fit me quite right.
I got my work trousers from M&S. Great material, very comfortable, good fit and reasonably priced.
The only Gap I know of that's accessible to me is on Oxford Street. Is there one at One New Change?
I checked M&S today (that's actually where most of my work trousers have come from!) but their styles were shite as well and trousers were too baggy.
Tried Topman and, quite oppositely, their trousers are stupidly thin. Don't even bother trying on their Skinny trousers, is my advice.
Tried River Island. Close but they just weren't quite right.