What does "nothing in the said sub-clause" imply?
"Nothing in the said sub-clause" implies that the restrictions mentioned in the said sub-clause will not affect or prevent any existing law from being imposed, or any new law to be made, for the benefit of the general public. In particular, it ensures that no existing law related to professional or technical qualifications, or state-owned or controlled corporations carrying on trade, business, industry, or services will be affected by this sub-clause.