yes, most big Uk retailers have copied black Friday now. Asda (owned by Wallmart) started it 2 or 3 years back, the others quickly jumped on the bandwagon.
This year was notable for folks shopping mostly online instead of fighting in the aisles at Tesco over dodgy TV sets.
amazon Uk have been running a black Friday/ cyber Monday sale fortnight thing for over a week already. they have discounted the Fire 7 basic model to £30 and the kindle paperwhite to £80 but not the other fire models.
we don't do thanksgiving, no one here has figured out what there is to give thanks for about our Novembers
And we have half- inherited the Halloween sweet run
a.k.a. trick or treat - I say "half" 'cos if you open the door and say "trick" you get puzzled blank looks ....