Below is a nice article about UK made pyjamas. The company mentioned make all their nightwear in Britain. I’ve not tried these pyjamas but they look good – html://www.pjpan.co.uk/about.
Other possible (again untested) places to buy British pyjamas and dressing gowns (and I am sure there must be more) are:
Sir Plus dressing gowns are made in Britain. You’ll find many other made in England clothing items at Sir Plus. Everything they sell appears to be made in England.
http://www.guda.me.uk/ – just pyjama bottoms; made in England.
http://store.turnbullandasser.co.uk – Made in England. You’ll find many other made in England men’s clothing items at Turnbull and Asser.
http://www.sogoodnight.com/ – for kids pyjamas made in England.
http://jimjamz-gifts.co.uk – for babies and little ones – pyjamas packaged in jam jars designed to look like homemade jam – all produced in the UK.
http://www.midnightlondon.co.uk – playful pyjamas for ladies and hot water bottle covers made in England from 100% cotton.
Betty Blues Loungerie for women is made in the UK – pyjamas, nightwear, robes, etc.
Budd shirtmakers pyjamas, nightshirts and dressing gowns are all made in the UK, as well as made in England shirts (off the beg or bespoke using English, Italian or Swiss milled cloth), pocket squares, braces by Albert Thurston, Tina Loader ties (other ties and cravats are foreign made), waistcoats, and Pantherella socks. Other items are generally foreign made. They say on their website “we are passionate in celebrating and supporting British craft and workmanship and all of our products are sourced here in the UK”, although of course that does not mean they are all made in the UK. They have a shop in the Piccadilly Arcade in London.
New & Lingwood sell exclusive and very exclusive made in England dressing gowns and slippers, as well as made in England ties, socks (some are made in Italy though), scarves (again some are made in Italy), coats, shoes, and pockets squares (again some are made in Italy). Other items are generally foreign made. They also use English milled clothes for some of their foreign made suits and trousers, as well as some Italian milled fabric, off the peg and tailored. Their off the peg shirts are foreign made, although possibly their bespoke shirts are made in England perhaps using Italian milled cotton. They have shops at 53 Jermyn Street, London (on the corner of the Piccadilly Arcade) and in Eton, near Windsor.
Emma Willis make exclusive dressing gowns and pyjamas in England, as well as made in England shirts, boxer shorts, and walking socks.
Barrington Ayre make bespoke and made to order English made mens and ladies pyjamas and dressing gowns.
Avaj men’s underwear is made in the UK. Avaj say “The entire clothing and grooming product ranges are 100% designed and manufactured within the UK, and in fact this is true of 99% of the avaj product range.” Underwear – Briefs, vests, lounge pants, hooded robes, dressing gowns. Male Grooming & Skincare by avaj – exfoliating scrubs, moisturisers, beard shampoos and conditioners, etc. Accessories – Washbags, weekend bags, top hats, bow ties, pocket squares. Homeware – Tea light holders, candles, a bath-salt bowl and scoop, a cake stand, a fruit box, trays and a champagne store – http://www.avaj.co.uk
Perhaps surprisingly given how much they cost, Derek Rose pyjamas are not generally made in the UK, although I understand some of their silk products are made in the UK and their mens slippers are UK made and they do sell a made in England dressing gown.
Marks and Spencer was the go to place for made in the UK pyjamas but these days Marks and Spencer nightwear, like the vast majority of their clothing range, is foreign made.
Marks and Spencer made in the UK 100% cotton men’s pyjamas. Still in great condition for their age, which is pre-2006. Photograph by author.
Marks and Spencer made in the UK 100% cotton men’s pyjamas. Still in great condition for their age which is pre-2006. Label detail. Photograph by author.
Left – BHS made in China 65% polyester, 35% cotton men’s pyjamas – the elastic in the pyjama trouser waist has gone. Right – Marks and Spencer made in the UK 100% cotton pyjamas, still in great condition for their age. Both pairs are of a similiar age and at least 10 years old as of Oct 2016. Photograph by author.
Wild Geese seems to be a new pyjama brand intending to make in the UK (as of Feb 2015). Keep an eye on their twitter.
The Reach London currently import bathrobes from Turkey. Their intention, if their summer 2016 Kickstarter is successful, is also to make cotton mens and ladies pyjamas in the UK.