Having had a quick Google I’ve established that “DW-A” is/was:

VX281
D-CACO
G-BCOW
N281L
G-RNHF
c/n ES.3615

I”MW-S” was another aircraft altogether (I think) ex VX302 – photos taken at Old Warden although it was one imported from Germany by Doug Arnold.

G-BCOW was sold to Spencer Flack so prob the same airframe