Hi - I think this is a new product. It was on promotion at Asda Yeovil and it is also online. I don't know how to link to the specific product in Asda.com.
I see that Tesco.com has it for £2.07
Here's what the Colgate website says it does..
Freshens your breath with an intense mint flavor burst
Whitens teeth with a cavity-fighting, sparkly blue formula
Creates a cleaning action that gets between teeth and hard-to-reach places to kill the germs that cause bad breath
Delivers everything you need for a brighter, whiter smile