Andrew,

There is nothing the british like more than selling their companies off. Nestle / BAA / various brewery takeovers! Who owns landrover, jaguar, MRV???? not the brits, BPs stake in russia, P&O, various power and water companies, Chealsea, Harrods etc, etc.. To say its protectionism against middle-east investors is just naive. Its just a bad deal and one Qatar couldnt really afford (both $ and reptuation).