Chris - waltz, vw, foxtrot/paso, samba
Okay, the following are the dances they have left...
Jade - tango, as/rumba, paso, jive
Phil - foxtrot, as/rumba, paso, jive
Ricky G - vw, tango, qs/salsa,samba
Ricky W - tango, foxtrot, as/ccc, jive
Ali - vw, tango, foxtrot/ccc,samba
Laila - waltz, as/rumba, paso, salsa
Natalie - waltz, qs, foxtrot/rumba, samba
Craig - vw, as/ccc, paso, salsa
Assuming that they're going to do one from the discipline they have the most dances remaining in and that no 2 couples will dance the same dance, we're left with the following possibilities:
Chris - waltz, vw, foxtrot
Jade - rumba, jive
Phil - rumba, jive
Ricky G - vw, tango, qs
Ricky W - tango, foxtrot, as
Ali - vw, tango, foxtrot
Laila - paso
Natalie - waltz, qs, foxtrot
Craig - ccc, salsa