"Britain’s surveillance agency GCHQ, with aid from the US National Security Agency, intercepted and stored the webcam images of millions of internet users not suspected of wrongdoing, secret documents reveal.
GCHQ files dating between 2008 and 2010 explicitly state that a surveillance program codenamed Optic Nerve collected still images of Yahoo webcam chats in bulk and saved them to agency databases, regardless of whether individual users were an intelligence target or not.
In one six-month period in 2008 alone, the agency collected webcam imagery – including substantial quantities of sexually explicit communications – from more than 1.8 million Yahoo user accounts globally."
One of the ways that GCHQ spies on British citizens is through webcams on laptop computers and also via smart phones. If you do not need a camera on your laptop the easiest and least technological way to block it is to place some duct tape over the aperture. Switching off is not enough as it can be enabled at any time by GCHQ. I tried to uninstall my camera via 'add/remove' programmes but on Windows 10 (which was forced upon us) it does not allow you to uninstall it-no surprises there! However there is a way that this can be done. I have followed the advice on this website: https://www.itsupportguides.com/knowledge-base/windows-10/windows-10-how-to-completely-disable-your-webcam-camera/
In addition to the intelligence services obviously other people involved in criminal activities can also use the camera to discover your passwords and hack into email accounts, online bank accounts and any other accounts that you may have passwords for so it is vital to disable completely the Big Brother on your computer. As far as smart phones are concerned-destroy the damn thing. Nobody really needs such a device anyway. Smart phones are intended for dumb people and this is why the likes of Amber Rudd want you to have one! It makes mass surveillance so much easier and don't forget in addition to governments and other criminals global corporations such as Google are also spying on you. Get rid of the smart phone and replace it with a very basic pay as you go mobile phone that is actually a phone! Do not register the phone and do not purchase a phone that automatically registers you on the National Mobile Property Register as this is for the benefit of the Police and intelligence services, not the public! I have already noticed that some market place sellers of phones for sale on Amazon.UK register you automatically WITHOUT your consent.