Runway31 already said he does not get paid any different for working Christmas day. I think there are also insurance issues that prevented us from using the red machines last time.
I'm not normally a supporter of the FBU on this issue, indeed I suggested on another thread that the firemen should get sacked if they strike, like the USA did with their ATC. However, Runway31 comes across as a sensible sort of guy who is putting his life on the line just as much as the rest of us. His story of the Gov't stitching up the FBU also sounds worryingly believable.
With a handle like "Runway 31", are you part of the "normal" fire service and operating on the same terms and conditions, or do airport fire services employ people under a different scheme?