Based in the UK, the Thema Consortium was formed in 1995 at the Tardebigge pub in Worcestershire. Later we incorporated the Dedra Consortium to form the TDC. The whole membership is made up of fellow Thema and Dedra enthusiasts, who collectively hope to offer support and advice to each other..

We can help you with some technical advice from fellow owners who may have more knowledge than yourself. We can offer members a selection of new spares and engine service kits at very competitive prices - recoup your membership joining fee in one transaction!

We encourage members to come along to our AGM, to meet socially and to join us at occasional Spanner Away Days, where we dismantle non-running vehicles in order to salvage otherwise hard to come by spares, from a washer to a wing.

If you are interested in joining the Consortium, please see our membership page for more details.

Please make full use of our Forum to discuss all things Thema and Dedra. You are welcome to advertise items for sale and wanted on the board.