Taking heed of all your comments in this thread Additional Door Locks and paying particular attention to Agger, Deeps and Pepe's comments, we decided to order a new replacement lock for our Eriba.
We started the process on 11th January by Emailing an enquiry to Jandi and we must say that their service has been second to none. We've never dealt with Jean and Sandy before and we are now very impressed.
After a few early Emails to establish the Eriba serial number and key number, the parts were quoted and ordered by the 15th January. The lock arrived at Jandi 3 days ago and after a quick phone call to Sandy to make sure I could fit the new barrel into the new lock (the existing keys are needed) and payment over the phone, the complete lock mechanism and barrel arrived with us today. Total cost £52.96 incl. P&P.
We will probably find that we will now never need to fit it but as the existing lock mechanism is a little bit "clunky" we're glad we've got the spare because we could imaging it being a bit of a nightmare to try and source the parts if, during our extended travels on the continent, the existing lock was to let us down.
Randa