[kokey]

Here in London, the demand for Linux engineers with several years of experience is quite high. This means there are a lot of contract jobs available, usually 6 months in duration, and the rates are around £300-£500 per day ($470-$790 US)

What makes things worse for employers are that changes to UK immigration laws implemented last year, make it even harder to employ people from outside the EU. There is now an annual cap of 20,000 work permits, except if it's an inter office transfer.