Predjudice

"As an overriding principle, one can assume that after Brexit, the closer the UK remains to established EU regulatory standards, the greater the degree of access the UK can have to the single market – and vice versa, without prejudice to other considerations (eg the principle of the unity of the four freedoms)." (The Guardian.)

What is the exact meaning of the prepositional phrase "without prejudice to..." in the sentence above?