...the coil for that side!? But its still exactly the same no spark on cylinders 2 and 3? Anyone got any ideas where i go from here?
I have checked the HT leads and they are all working fine!
Coil replaced with new and ht leads continuity tested all ok!

Plug leads could be US

so you've checked the plugs/leads and changed the coil pack..were they new or used?...check for breaks in the wiring/check any multiplugs that connect the engine loom to the main loom...but prob might lie in the ecu.