Ashens and Mat Riley Chat | Stand Up To Cancer with YouTube Stuart Ashens and Mat Riley tackled brand new experiences all in aid of Stand Up To Cancer, but were they able to rise to the challenge? To donate £5 text STAND5 to 70404 (UK Mobiles only).   If you're outside of the UK, please donate online at   Please note text donations can only be made from UK mobiles. Full T&C's can be found at