Ok, I admit to being muppet of the week,

but cannot get this switch apart...
Pic 1 front view
pic 2 back section removed (screwdriver lever in orange clips)
pic 3 white clip removed (which I thought was the secret)
pic 4 story so far, the centre black circular section is part of the assembly from the front panel, but something is holding it inside the squarish section.
pic 5 whole assembly from t'internet pc screen.
The markings indicate it is a KNDELE LA167-D8-11x2 415v 10A
Anyone any ideas please?
Thanks
Pete