A quick update in case anyone is in the same situation:
I gave Farnell a phone call last thursday and it appears my order was "on hold"
They promised the RPi would arrive any day now.
Another co-worker of mine, having also ordered its RPi there give them a call the same day. They told him its order had been plain cancelled!
Good news though, they sent him a RPi right away to apologize and he received it the next day.
All in all, if you see that your Farnell order seems late, you have to try to get in touch with them... For sure they are not that responsive but your order might well be in some kind of a limbo state!
Hope this helps,