Walters is nominated for her performance in BBC1's A Short Stay in Switzerland. Listed in the same category is Suranne Jones for ITV's Unforgiven and Naomie Harris for BBC1's Small Islands.
Tom Hardy will battle for the Best Actor award for his performance in Sky One's The Take, against Stephen Graham for BBC1's The Street and David Oyelowo for BBC's Small Island.
Cast Offs, Misfits and The Street are to fight for Best Drama Series.
Ruth Jones, the star and co-writer of Gavin and Stacey, has been nominated for Best Comedy Performance.
Both of Simon Cowell's hit shows, Britain's Got Talent and X Factor, have been nominated for Best Entertainment Programme.
The awards will take place at the Grosvenor Hotel on Tuesday 16th March.