I have some peg trousers(warehouse) and smart wide leg joggers (Matalan) I wear with a tucked in top, some times a Breton strip or a round necked sleeved shell top or a roll neck. (Mango/ ff/ next/ tk maxx)
I love midi skirts I have a subtle animal print one (primark) I wear with a black long sleeved top (Sainsburys) and a plain black button down skirt (hm) with pockets and wear it with tops as above with trousers.
I have blue ponte blazer (tu) to smarten things ups if needed.
I also have two or three dresses with black tights. One a lights knitted dress with belt and pockets from next And a tunic /swing dress from primark.
I have a couple of slim belts too that help (primark)
This is my main work wardrobe and I do need a new dress and a new pair of trousers. I have worn the same things for around 5 years. And buy a few pieces each year.
For shoes I have a pair of wide fit loafers from Matalan that I wear with an orthotic insole. The orthotic is for arthritis but has made the cheap shoes almost indestructible! I also wear my non work boots if very cold. And a smarter non work patent loafer (ff) if needed.
I like pockets and quick drying non iron fabrics. I dress conservatively (higher necks and nothing above knee).
I have a gorgeous Paul Costello leather echitta day bag that can hold enough so no need for carrier bags.
I'm a size 16 (plus xmas lbs 
) 5'5.
In summer I wear culottes and tops. Or trousers skirts and tops as above and no tights and sandals also have one suitable summer world dress for very hot days. My 'winter dresses are too hot and need thick tights!