So broadcasts coming from foreign countries are not unauthorized by Ofcom,
and Ofcom not taking action against those unauthorized transmissions is an accomplice of a criminal action, at least should jam any transmission coming from abroad,
otherwise, that means the Ofcom is a criminal organisation ?
As long as foreign broadcasts, like for example former Radio Luxembourg's English service on 1440 khz, are legal in the country of origin and using agreed frequencies and power levels designated by the I.T.U. then that foreign broadcast service is automatically legal as far as Ofcom is concerned. However, an unlicenced radio broadcast from outside UK territory, but receivable in the UK is still a contravention of UK broadcast law. So, let's say a Dutch radio pirate get's found out while in the UK, he can still be prosecuted in the UK, despite never having broadcast from UK territory, but from Holland or on a ship in international waters.
For further information see:
EUROPEAN AGREEMENT
FOR THE PREVENTION OF BROADCASTS
TRANSMITTED FROM STATIONS
OUTSIDE NATIONAL TERRITORIES
Strasbourg, 22.I.1965
....which can be found somewhere online in PDF format by using google.
This agreement was made as a direct result of European off-shore pirate radio in the 1960s, and is still legally valid today, as far as I know