Apologies Ben, I didn't see the .deb files at first, I know what to do with .deb files!
I can confirm that downloading https://people.debian.org/~benh/packages/linux-image-3.2.0-4-amd64_3.2.65-1+deb7u1~test_amd64.deb and running sudo -i dpkg linux-image-3.2.0-4-amd64_3.2.65-1+deb7u1~test_amd64.deb worked for me. Prior to doing this closing the laptop and reopening caused the lights to flash, the fans to spin up, then a click and then nothing - a few seconds would pass then the same again - lights, fans, click nothing. After installing the test package, suspend and wake work as expected. Thank you Ben. -- Regards, Chris