Updated October 9, 2018: Added Cruwys News to the list of sites that mention the partnership. Also, the list of other sites mentioning WHSmith is at the bottom of this post.
I saw this announcement, https://www.businesswire.com/news/home/20180907005078/en/MyHeritage-Partners-British-Retailer-WHSmith-Distribute-DNA, when looking for something else:
Under the new partnership WHSmith distributes a unique product named MyHeritage Family History Discovery Kit, which bundles MyHeritage’s popular at-home DNA test with 3 months of access to MyHeritage’s suite of premium online genealogy services. This allows consumers to receive detailed ethnicity reports and connect with their relatives around the world through the power of DNA testing, and to utilize MyHeritage’s 9-billion-strong collection of historical records and family tree tools to embark on a journey to uncover their family history.
The MyHeritage Family History Discovery Kits are on sale in 200 WHSmith High Street stores, as well as online via www.whsmith.co.uk.
This is geared towards the United Kingdom (U.K.) market although you can order online if you aren’t in the U.K. and appears to be the standard MyHeritageDNA kit processed by FamilyTree DNA (FTDNA).
Tends to be a bit pricier (£89.00 GBP) than U.S. kit, but you get 3 months of MyHeritage access that offsets the higher price. You can order it at: https://www.whsmith.co.uk/products/my-heritage-dna-kit–three-month-membership-gift-pack/39608147 (not an affiliate link) or check your local WHSmith store if you are in the U.K. to see if they are carrying it.
I also later found it posted several other places: