A similar promotion to last year (http://www.hotukdeals.com/deals/steam-wb-games-sale-injustice-cheaper-than-today-s-steam-deal-batman-lego-others-2274045). With Lego, Batman and Middle-earth: Shadow of Mordor on sale.

Injustice: Gods Among Us Ultimate Edition
On Sale -75% £3.49

Middle-earth™: Shadow of Mordor™ Game of the Year Edition
On Sale -50% £7.99 (down from £17.99 last year)

Mortal Kombat Komplete Edition
On Sale -75% £3.74

Batman™: Arkham Knight
On Sale -50% £12.50

Batman™: Arkham Knight Season Pass
On Sale -50% £8.00

Batman™: Arkham Knight Premium Edition
On Sale -50% £20.50

Batman™: Arkham Origins
On Sale -75% £3.74

Batman™: Arkham Origins Blackgate - Deluxe Edition
On Sale -75% £3.74

Batman™: Arkham City GOTY Edition
On Sale -75% £3.74

Batman™: Arkham Asylum GOTY Edition
On Sale -75% £3.74 (up from £2.49 last year)

Bastion
On Sale -75% £2.74 (up from last year)

Gauntlet™
On Sale -75% £3.74

Guardians of Middle-Earth
On Sale -75% £3.74

F.E.A.R. 3
On Sale -75% £3.24

F.E.A.R. 2: Project Origin
On Sale -75% £2.49

F.E.A.R.
On Sale -75% £1.74

Hot Wheels™ World’s Best Driver™
On Sale -75% £3.74

LEGO® Batman™ Trilogy
On Sale -75% £7.49

LEGO® Batman 3: Beyond Gotham
On Sale -75% £4.99

LEGO® Batman 2 DC Super Heroes™
On Sale -75% £3.74

LEGO® Batman: The Videogame
On Sale -75% £3.74

LEGO® Harry Potter: Years 5-7
On Sale -75% £3.74

LEGO® Harry Potter: Years 1-4
On Sale -75% £2.49

LEGO® Jurassic World
On Sale -75% £3.99

LEGO® Lord of the Rings
On Sale -75% £3.74

LEGO® Marvel Super Heroes
On Sale -75% £3.74

LEGO® Marvel Avengers
On Sale -75% £6.24

LEGO® The Hobbit™
On Sale -75% £3.74

LEGO® STAR WARS™: The Force Awakens
On Sale -33% £16.74

LEGO® STAR WARS™: The Force Awakens
On Sale -33% £22.10

The LEGO® Movie - Videogame
On Sale -75% £3.74

Lord of the Rings: War in the North
On Sale -75% £3.74

Mad Max
On Sale -50% £12.49

Scooby-Doo! and Looney Tunes Cartoon Universe Adventure
On Sale -75% £3.74

Scribblenauts Unlimited
On Sale -75% £3.74

Scribblenauts Unmasked: A DC Comics Adventure
On Sale -75% £3.74

As pointed out by oUkTuRkEyIII, Shadow of Mordor, Mad Max and Batman Arkham Knight games are cheaper elsewhere (cd-keys). Batman Arkham Origins, Arkham City and Arkham Asylum seem good still.