Their reply has not upheld my concerns about the broadcast.
Derren Brown claimed he would broadcast a live lottery prediction show on 9 September, followed by an "explanation" show the following Friday. My concern focused on the misleading nature of the trails, and the lack of a disclaimer advising viewers that the programme would not, in reality, be an actual live prediction.
OFCOM have replied in the following terms...
...[A]fter reviewing the material we do not judge there has been a breach of our regulations.
Whatever solution viewers believed, or whether [his explanations] was all part of the 'showmanship' as he indicated at the start of the programme, is a matter for individual viewers to decide.
That he did not definitively clear up how he guessed the lottery numbers is not a problem for us as the regulator.
And there shall I leave it.