Guido thinks such a ruse to bankrupt Blair et al unlikely to succeed, the money was spent by the Labour party, Blair was party leader and Carter general secretary. Would be fun to see them wriggling in court.
Guido has however heard Tory-inclined lawyers contemplating over their brandies the prospect of bringing a private prosecution in the event that the CPS fails to take action. Guido is good for a grand towards costs and suspects many, many others would willingly do the same.