Weisz 

I'm touched by your faith in the accuracy of director's dates of birth as recorded by Companies House. IME, an article by 'some journalist' is of equal reliability to the records of Companies House. I'm not going to revert your change again, but I suspect that others may do so. Remember, it's not our place to determine what is correct when there is doubt as to a validity of a fact - we should cite both sources and let the reader determine which one they trust more. YMMV.