Comment by blibble
I wouldn't be betting my freedom on the regulator agreeing with that logic
the regulations specifically go into great detail about official publications and formal circulation
would a reasonable person consider this a leak? then it's UPSI
The OBR admits that they published it too early.
I am not an expert but I think that even trading on a leak is not unlawful as long as that leaked information was indeed made public (e.g. someone leaks to the media and the media then publish it), although it may have been unlawful to leak the information. The point is that insider trading is not allowed. It is no insider trading if the information is available to everyone.