James Purnell, the new culture secretary, may opt for further safeguards to protect children. But he is thought unlikely to scrap proposals in the 2005 Gambling Act to allow internet gambling websites and betting shops to run broadcast ads.
A government spokesman said: "It is too early to say what, if any, action will be taken."
A spokesman for the Department for Culture Media and Sport said: "James Purnell will be looking at all the provisions in the Gambling Act, ahead of its implementation on 1 September. There have been concerns raised over the changes to the laws on advertising, so this is one area he wants to look at."
The move is in line with Gordon Brown's decision to scupper plans for a super-casino in Manchester.
Purnell told MPs in a written statement: "I will ensure our new system of regulation, as it covers every aspect of casinos and other gambling premises (from advertising to checks on entry to controls on games and machines), will place public protection first."