The sockets might be made in France by Facom (although I'm doubtful), but they definitely aren't made the same as Facom. I own both and the finish, design, and fit (on the ratchet) are notably different.
For whatever it might be worth, I think they might have a closer association with Bost than Facom-they both use the same dimpled pattern.
I'm not so much doubting that they're functional and maybe even reasonably durable, but I'm not at all impressed with the finish. Not just the pieces that are flawed, bur even the "good" bits look cheap next to some better quality items. I'll try and get some pics when time permits.
Off the top of my head, from the Britool Expert range, I have the 1/2" metric rail, the 1/4" metric rail, the mixed female torx rail, a set of hex bit sockets, and a 61-piece 3/8" set in a case. All brand new and for sale if you're keen
For comparison of sockets, I have a large selection of Facom and Halfords and older Britool (stuff from the red and blue packaging, pre-Expert) along with some Ko-ken, Toptul even stuff from Aldi and Lidl (and even that I'd rate a better quality of finish).
Then there's the issue of product support from Britool -which as mentioned seems non-existant.
I could have decided to keep the Expert stuff I have and just live with it. I may never have had any real issues. I wouldn't have been happy though, knowing that I could have spent similar or less money on better quality Halfords tools and been able to exchange them in my local store if I had any issues.