Well, I did a bit of hunting around online. The official BBC website just says Spring 2007.

Apparently, Dreamwatch is saying it will start on March 31st. Not sure how reliable Dreamwatch is, but that does seem to gibe with what I've heard.

ETA: Okay, I actually went to the Dreamwatch website and that does seem to be officially confirmed as the start date. Be warned that that Dreamwatch link does lead to mild spoilers.


Athos: If you'd told us what you were doing, we might have been able to plan this properly.
Aramis: Yes, sorry.
Athos: No, no, by all means, let's keep things suicidal.

The Musketeers