The girls and boys at GCHQ can track what you do, so no doubt many others can O F.
You are tracked on CCTV, your car number is collated as you drive and tracks where you go a lot of the time, if you travel to the continent your car and you have been checked out for many years but now that is public knowledge. If you use a mobile phone you are tracked whilst it is on and your card usage when spending is collected and used as are loyalty cards.
Numerous people can force entry in to you home and listen to what you say under Labours laws on land or mobile calls whilst they'll let any Dick, Abdul or Igor jump ship here with no papers and lavish our hard won cash on them.
So what exactly are you concerned about? I've nothing to hide so apart from protecting our money I don't really care that much.
If you have ISP provided modem change to something more secure and adaptable, use alternative email address to cut out problems and there are other anti tracking devices for internet use if you want.