Was £14.99 & now down to £6.99, has really good reviews too, thought it a bit different from the usual Infrared Controlled toys. Plenty of stock around in the 12 postcodes I checked across the UK. They have a few other vehicle type toys on offer, will pop links to more in comments.

Our remote control tank is ready for combat! It moves just like a tank and has realistic driving track sound effects. When you turn the turret, there's a mechanical sound and the cannon has a firing sound, lights up and even recoils just like the real thing!
Infrared control full function movement with turning cannon and firing action. Great fun for driving & shooting.

Multiple light and sound for immersive playing.
This set includes one tank with remote control but there are two styles available so they can go head to head in battle!
This hefty tank measures 26cm long (32.5 cm included the cannon).