Thanks for the replies guys. I spoke to the guys at Brookes suspension who were super helpful but they reckon it's a swine of a job with a pair of Street triple forks currently being machined to separate bracket from stanchion. I'll try MCT, but before I do I'm going to try one last thing seeing as the stanchions are now toast! I'll let you know how I get on.
For reference mine have gone in a "spoon" shaped patch at the front of both the forks, which has a bronze coloured patch, inside of which the stanchion appears to be "crazed". Can't get a decent pic of it, but a lot of those on eBay seem to be similar.