Actually because your getting paid in the UK through the UK finance office you will be charged Tax... Its the same with alot of expat companies (Shlumberger , Halliburton etc). Some big companies have their finances at locations where the tax is minimal (10%
. But yea it sometimes happens.
But the wording is a bit generic.. some home countries require you to pay tax even tho your getting paid outside the country. I think they say it just for legal reasons that they are not responsible for your tax payments. I think US citizens have to pay tax even tho they are earning the money outside the US.