Absolutely agree HLCPTR - the introduction of FADEC to the Chinook resulted in some uncontrollable runaways that trashed the engine.. It's all very well handing full control to the computer but the software needs to be bug-free.
Sevarg - the Wessex had a fuel computer but that would just freeze in the event of a loss of signal - it could be recovered by resetting the speed select lever. The same computer and engine (Gnome) were used on the Sea King but that had a manual reversion (throttles in the roof). The Whirlwind - I think - had the same computer and that had a manual reversion as well. Definitely not FADEC.