Ultimate Spiderman Season 3 aired in the UK today (7th June 2014).
Subtitled Web Warriors
2episodes, TheAvenging Spiderman - Part one and Part two on Disney XD.
Summary (taken from the Sky planner):
Episode 1 - Spider-man is now part of The Avengers, ready to fight alongside super-heroes like Hulk and Iron man to fight Loki and Doc Ock's latest Threat.
Episode 2 - Spidey must bring The Avengers and the Agents of SHIELD together in the ultimate battle to save the Earth from Loki and Doc Ock's master plot.
EDIT: Ok, I couldn't add because of this change: