Two DVD's have been released in the UK and various other European countries (Monsters Vs. Mutants and Wanted: Bebop & Rocksteady).
Australia also got the Cult of Shredder DVD, I believe this DVD was also planned to be released in Europe but got cancelled.
Somehow I doubt the Kavaxas and remaining episodes (from the US 'Final Chapters' DVD) will be released in the UK/Europe.