Article 33
Tenderers may submit tenders: (a) by post: in which case the invitation to tender must specify that the relevant date shall be that on which the tender is posted, as evidenced by the postmark. Tenders submitted by post must be registered; or (b) by hand-delivery to the Council General Secretariat direct or by any agent of the tenderer, including private messenger services: in which case the invitation to tender must state the date by which tenders must be submitted and specify the department within the Council General Secretariat to which they must be delivered against a signed and dated receipt. The date must be the same in both cases. In order to maintain secrecy and to avoid any difficulties, the invitation to tender must include a provision as follows:"Tenders must be submitted in a sealed envelope itself enclosed within a second sealed envelope. The inner envelope shall bear, in addition to the name of the department to which it is addressed, as indicated in the invitation to tender, the words 'Call for tenders - Not to be opened by the Registry'. If self-adhesive envelopes are used they must be sealed with adhesive tape and the sender must sign across this tape."