In cleaning up the garage I have found some Warwick parts I didn't use when I rebuilt mine. They are in fairly rough shape as they are as found. A lot might be too heavy to try and send across the pond. Inquire and
I can send pictures and description of the parts you might be interested in.
Drive Shaft, Differential, Complete DeDion tube with axle broken on one side, Fiberglass radiator duct, Steering column with steering box and made for adjustable steering wheel, Center tie rod with outer adjustable ends and idler arm and mount. These are all from a LH drive Warwick GT #23.