Westminster's European Scrutiny Committee has decided to hold its deliberations in private, even when questioning ministers.
Liberal Democrat MP, Richard Younger-Ross, who is a member of the committee, said:
"It’s a great shame that the Committee has decided to meet in private.
"The Committee makes important decisions about which pieces of European legislation need to be debated by Parliament.
"These decisions will now be kept secret from the public."
A conspiracy-theorist would say that the Labour cabinet has leant on the majority membership of the committee so that the contribution of UK ministers to poor EU decisions may continue to be concealed.