Not sure about shipping/distribution to the UK, but the additional counters were put into the Thirty Years War Battle expansion.
Have played this game a couple of times now and really enjoying it. I was just noting that there are certain counters which seem to be either missing - Venetian and Savoyard units mentioned in the rules do not seem to exist in the counter set, for example - or not present in sufficient numbers (mainly thinking of control markers).
Does anyone know if these are available anywhere? I think I saw a picture of the missing units on BGG so I guess this can be resized, printed out and made into counters, just wondered if there was a more straightforward way of obtaining them?