The IOC Code of Ethics for cities bidding for the 2012 Olympic games covers all aspects of behaviour.

It states on the first page:"Candidate cities must abide, in all aspects, by all provisions of the IOC Code of Ethics".

Section B of the code is one of the most important, as it covers "integrity" and the standards expected from IOC members.

This section has some clear guidelines, including:

• "The Olympic parties or their representatives shall not, directly or indirectly, solicit, accept or offer any concealed renumeration, commission, benefit or service of any nature connected with the organisation of the Olympic games"

  THE OLYMPIC RULES The Olympic parties shall neither give nor accept instructions to vote or intervene in a given manner IOC rules for bidding cities

• "Only gifts of nominal value, in accordance with prevailing local customs, may be given or accepted by the Olympic parties, as a mark of respect or friendship. Any other gift must be passed on to the organisation of which the beneficiary is a member."

• "They (the Olympic parties) must not act in a manner likely to tarnish the reputation of the Olympic movement."

• "The Olympic parties must not be involved with firms or persons whose activity is inconsistent with the principles set out in the Olympic Charter."

• "The Olympic parties shall neither give nor accept instructions to vote or intervene in a given manner within the organs of the IOC."

The advice to bidding cities continues with rules of conduct which bidding cities have to adhere to.

This sets out the rules of what cities bidding for the games are allowed to do.

Article 10 of these rules state that: "There will be no visits by IOC members to the cities, or from the cities to IOC members, for the promotion of their canditature.

"If an IOC member must travel to a city for any reason, the city may not take advantage of this occasion for the promotion of tis candidature, nor cover the costs and other expenses linked to such a visit."

Panorama: Buying the games will be broadcast on BBC One on Wednesday, 4 August 2004 at 21:00 BST.