Just picking up on some old comments over on The Wardrobe.  Certainly Shetlands seem more desirable than lambswool, particularly when the now disgraced M&S did so many.  But I found the availability of M&S at low prices in the right sort of colours a blessing a few years back.  They were forever cropping up at £3 and £4 a time in local charity shops.  Very borderline Ivy to be sure, but getting hold of imported American knitwear is always difficult (which is exactly what, of course, makes it worthwhile).  Yet no-one seems very impressed by contemporary Press offerings; Paul Stuart isn't always wonderful for the money; I've only heard one or two speak favourably of the Andover Shop.

Alfreton.  A town I visit sometimes when I want to buy kefir.  The home of Dalkeith as well as a firm that still makes fully-fashioned stockings.  Textiles in Derbyshire have a long, long history with Tootal and Smedley being just two of the better-known names.

TRS, you might well have travelled due north-west between Ashbourne, the nearest town to the west of me, and the Potteries sprawl.  The Peak District is justly famous, the more so as you get to the higher ground where unwary walkers are often marooned by the mist and rain suddenly descending. 
We once lived in a three-storey gritstone cottage in Cromford, a village of limited beauty (too many tourists, too much traffic), set in exceptionally lovely surroundings.  Even now, as it grows dark outside, I can see the trees changing colour around the fringe of the former medieval deer park, with The Chevin, a lower part of the Pennine Chain, off to the right.  We have incredible sunsets. 
You would have seen the best of Derbyshire from the train window.  The east of the county is deeply unattractive, yet my mining forebears came from there and I'm still rather attached to it.