All the proxy sites are blocked by it, signed up to some service that is supposed to send me links to brand new ones that will last a day or two before they're blocked too (so hopefully that will work). 

I'm really considering installing a VPN or setting up a proxy connection in the browser, but I'm pretty sure if that's discovered I'd be in biiig trouble (financial office, data protection, all that jazz)

It's such a sensitive block thing as well, blocked a huge amount of other sites we use at work too, so I'm gonna try and talk to them about it. (Reading up on it, its Blue Coat, the thing that the Syrian and Burmese government use to keep their citizens censored - so not too easy to get around I guess. But I don't think it's cool for my work to be using that…)