Mars is bringing back the Marathon bar in response to demand from internet campaigners.
The confectionery giant will re-launch the Eighties favourite in October for a limited period.
It comes fifteen years after the Marathon was dropped because of declining sales.
The Slough-based chocolate firm said the comeback was a response to online petitions and campaigns on social networking sites such as Facebook and Bebo.
Thousands of fans have campaigned across scores of websites to get the Marathon back on shop shelves.
Mars will produce around 23 million Marathon bars packaged in the original brown wrappers for the relaunch.
However the chocolate giants are refusing to stop their production of Snickers Bars claiming that the competition would be good for sales.
Marketing manager Gordon Storey said today, "We all know that the Snickers bar was simply a renaming of the Marathon bar but if that's what the public wants, that's what we will give them. The same chocolate bar in two different wrappers. Personally I am diabetic and cannot eat either without going into a Hyperglycaemic coma."
However the move has brought nothing but scourn from their main competitor's, Cadbury's. Speaking from his Birmingham based factory, managing director, Mr Wonka said yesterday, "It's laughable. An identical chocolate bar marketed in two different wrappers. Has the world finally gone mad. If you ever see our company do that you have my permission to come back here with some men and some Kalashnikov AK-47's and take us all out. We would deserve to die if we ever tried a trick like that."
Ruth Madoc of Hi-de-Hi!, Nigel Hawthorne and Paul Eddington of Yes Minister and Windsor Davies from It Ain't Half Hot Mum were among the celebrities who appeared in the 1980's Marathon campaigns. Although two of the four are now dead and one is unable to work due to problems with alcohol, Windsor Davies has said that he would be more than willing to support the relaunch of the once great confectionery bar.
Speaking from his home in Nantymoel, Wales, Davies told our Chocolate reporter, Peter Musgrove, "I'd be more than willing to support the relaunch of the once great confectionery bar"