Steering locks

Hi all

I have a 2001 Disco 2, running great until today when I put the key in the ignition and it just would not turn, steering wheel locked solid, nothing, tried spare key same thing, I had used the car twice earlier this morning with no trouble at all, any thoughts are most welcome, Colin

Barrel collapsed?

The barrel seems in order, evidence of some chard around, not sure where to go now?