Ok here is the Honda OEM number for the VPS or TVS 17350-PM4Q02.

No luck yet cross referencing to aftermarket such as TOMCO in the US.

Another lead to UK is item No4 on this link which seems to for a '93 EG which may help me at the wreckers if the EG used the same switch.
http://www.lingshondaparts.com/honda...block_03=14878