How to disable an imobiliser in a renault clio

Hahaha you having a laugh here ,RENAULT ---- immobilisor encrypted software ECU sealed and you break it to get it apart ,now the older renault clios can be turned off if you have a key that works ,you start engine and cut third wire along on the box behind the kicker plate drivers side ,but no key ? sorry dealer only and its expensive and three weeks for the key to arrive from france when the frogs are not on strike or haveing a day off for something ,then the spanish side of the border with siesta, fiesta ,mana?a ,Cant beat a ford