Samsung UK is running its own Black Friday deals that cover everything from Galaxy phones to QLED TVs. You can find the full list here.
The top deals are 100 off the Galaxy Note9 and 140 off the Galaxy S9 (note: S9+ is only 100 down). The Galaxy Watch is full price, but you can get a free Wireless Charger Duo (worth 90) that charges both your phone and your watch.
Then there are some older devices like the Galaxy S8 and Galaxy S8+ at 160 off, along with the Gear Sport watch at 70 off. Note that you can get up to 200 for trading in an old phone and accessories are up to 50% off.
Still, these arent necessarily the best deals. For example, the Galaxy S9 can be found on Amazon for 30 less (if you dont care about dual SIM).