The reason is that both camera and lens have to be small, to fit with all the other gubbins on a phone.

ECONOMIST: Camera-phones

They tell the story of how the units were formed in 1940 when Col Colin McVean Gubbins (Commanding Officer Royal Artillery) recruited a dozen regional captains as intelligence officers.

BBC: Abergavenny exhibition portrays real British Resistance

And to tell you what you already know, the UK doesn't have a huge sovereign wealth fund, of the sort they have in Norway, much of the Middle East and Asia, keen and able to make massive long-term investments in the gubbins that underpin a nation's ability to grow and create wealth.

BBC: A UK sovereign wealth fund?