Plans to introduce a civil partnerships register for gay and lesbian couples have come under fire from the TUC.

Although the union body cautiously welcomed the proposals in its response to the government's consultation, it warned that the current framework is too legalistic and complicated.

Current plans also discriminate against heterosexual couples who do not wish to marry, it said.

Instead, the TUC recommends that gay people be given the option to nominate their partner for such benefits as pension rights which, it argued, should not be dependent upon registration.

However, such registration should be confidential to prevent the possibility of homophobic attack, the submission added.

"The very fact that the government is proposing a civil partnership scheme shows that they are serious about tackling discrimination, and unions very much welcome that," said TUC general secretary Brendan Barber.

"But whilst not doubting their good intentions, the end result is unfortunately a second rate system for lesbians and gay men.

"Everyone should have the same rights and access to pension provision, regardless of who they are, how they live or whether or not they have chosen to formally register their relationship."