2002 Honda Integra Driver Door Remains Locked - Won't open with remote or manually

[integra1]

2002 Honda Integra (right hand drive Australia model) (model DC5 I think - 2002-2006 approx)

Driver side door was locked via remote, then later would NOT open via remote or even manually from the inside
Inside driver manual lock nob will not move up or down
Outside driver door handle does not open door
Inside driver door handle does not open door
Manual central locking switch (near driver door handle) operates exactly the same as the remote key fob switch (driver door still does not open)

Passenger door works fine via remote
Passenger door manual lock nob works normally up and down into unlock and lock
Rear hatch door works fine via remote and manually

(NOTE: approx Feb 2013 I purchased an after-market driver door actuator and had it installed by a professional but then the driver door was still opening via the door key manually)

The biggest problem is not being able to open the driver door to allow me to pull the door trim off so as I can have a good look and a tinker around inside the door panel

Previous experience with other cars was that the actuator motors started to lose power slowly but this one was all of the sudden overnight without any tell tale warnings

Any good idea's on how to get the driver door open?
Any idea's as to what might actually be the problem in these cars?
If I can get the door open any guides on how to get the door trim off effectively?

See thumbnail pics: 1] Driver door handle inside with electric window switches 2] Passenger side door 3] close up driver door handle 4] schematic actuator (no's 5 + 26) plus other locking mechanisms in door cavity

Any help appreciated
Thanks
Steve