Colchester Borough Council - Procurement Portal

Delta-ets - e-tendering service
The Delta-ets is used for handling the full life cycle of the tendering process for the public sector and its suppliers, from initial notification of requirements through Expressions of Interest, the issuing of Invitations to Tender (ITTs) and receiving and evaluating the final tenders, including optional reverse auctions.

Guidances
Useful guides on public sector tendering issues for suppliers hosted by BiP.