IMHO it's hard to tell either way, because their website wasn't designed with ease-of-use in mind.
That said, here's some facts I was able to gather on their business:
> Whilst IT research remains our primary focus, we now offer executive high-end commercial IT services to organisations with unique problems to solve.
> ...we also have a large body of knowledge of older systems, many of which have now gone full-circle and fallen into disuse, technology that has been abandoned and forgotten. We occasionally do projects involving those, especially when nobody else seems to remember how they worked. Our knowledge-base includes legacy programming languages such as Fortran, data conversion from obscure file formats, and even assembly language coding on various platforms.
Based on these quotes, I don't think it's out of the realm of possibility that they have clients in government.