(T) Immobiliser light on. engine will not start

Hi I am a new convert and need help. I have bought a Fiat Ducato 2002 2.8 td. I have had the yellow immobiliser light come on the dashboard, and now the engine will not start. I have read lots of different threads and it seems it could cost a fortune if you get it wrong. I am looking for a local garage that will come out or an Auto locksmith that some one could recommend in the South Birmingham area. The motorhome is stuck on my drive and my holiday is fast disappearing. Hope some can help

Hi Not sure if it was the same as a problem I had on my last 2.8 but if you go into engine bay and look on the bulkhead infront of where the steering wheel/behind battery you may find a small black barrel/switch and pressing on the top reset my locked ignition light as far as i can remember it was quite hard to find/see but once pressed vehicle was fine. It had something to do i think with the battery going flat.
Hope that may help not having much joy with my 2008 2.3 playing up!!

Regards Lexion