ARS Technologies offer a USB to ISA adaptor and includes free software
(supports most variants of Windows) to provide a virtual ISA
interface, so that the ISA card can be seen within a DOS command
console under windows.
Using this hardware (details below) and the ARS software you can
install the Inmos Occam / C toolset and compile and run code on the
ISA card.
http://www.arstech.com/item--usb2isar.html
http://www.arstech.com/item-External-Power-Supply-30W-isapwrx2.html
http://www.arstech.com/item-Enclosure-Dbl-length-for-1-ISA-PCI-card-isab2.html
The items can be brought from the website and shiped to the UK. Fedex
costs are a bit hig at approx $70.
Have fun.
I picked one of those up on ebay a few years ago for $10. The seller
nor did any potential buyers realize what was being offered :-)
Ram