Try stretching the placket and seams etc. when the shirt is wet before hanging. It improves the situation, but this is an inherent problem with most Lewin shirts. Reckon it must be the tension on the stitching being too high.
100% wool is best for starters. Wool/linen is for summer, which is something you might experience when you leave Edinburgh for Australia
You can only see whether you suit slim fit or regular fit best by trying on. There's not a huge difference between the two at Tyrwhitt, and I think 38L Regular and 40L Slim fit me pretty equally from Tyrwhitt.
Whether or not you get reliable recommendations in any shop purely depends on who you end up with. You could just make...
Colour-wise, navy blue or grey are most versatile. What jobs are you applying for? More staid professions might dictate a grey suit, others a navy. Navy is better for weddings, grey better for funerals. Not a pinstripe at first. Two-button single-breasted best bet for most people.
If you're planning to wear the suit most days you should really get at least two. Or two pairs of trousers for one suit.
£200 or a shade more should be OK for a suit from Lewin or...
Re Tapering and Slimming Down of Suit Pants, it's very easy. I have a sewing machine and do it myself, just got to make sure you balance the adjustments on each side to maintain the balance of the pants (and make sure the crease is still in the middle!). A tailor should be able to do it without any problems and fairly cheaply. At the same time you can adjust the length of the leg if necessary. Remember that you will want a slightly shorter leg if you're tapering...
In the UK,
Duchamp cufflinks with no bids:
a couple of nice Breuer ties:
And a lovely NEW black Alligator strap for deployment clasps (10% off for members on this):
So here's attempt 2 for better pictures:
Blue TM Lewin Shirt - Slim Fit 16.5 16 1/2 36 - Pinpoint
TM Lewin Silk Tie - Blue Spots - Excellent Condition
TM Lewin Silk Tie - Burgundy with White Spots
Thomas Pink Silk Tie - Burgundy with Blue Stripes
Eichmuller Stainless Steel...
Selling these in the UK:
Some things maybe not up to the standards of this forum, but the alligator strap is certainly very lovely! Hope this is the right way to include a picture, I've not done it before: