Originally Posted by
golfmad
Not using Avios, no. If you really want to travel CW your best options are to buy a WT+ ticket and use Avios to upgrade (subject of course to availability) or purchase a CW ticket.
An alternative which *might* work is to use Avios to upgrade to WT+ and then purchase an airport upgrade to CW for cash. Or, if you're very lucky purchase an upgrade from WT to CW (missing out WT+) at the airport. There is no guarantee that these airport upgrades will be available.
Also a cash upgrade from WT to CW if available will likely cost more than the original ticket!