Imagine your day-to-day life without the utility of cut/copy/paste.
I imagine it would be a lot like owning an iPhone.
Well yeah they kind of invented the fucking things.
Bletchley park called, and they'd like their place in computing history back.
The Court of Justice interprets EU law to make sure it is applied in the same way in all EU countries. It also settles legal disputes between EU governments and EU institutions. Individuals, companies or organisations can also bring cases before the Court if they feel their rights have been infringed by an EU institution.
Find an EU law that the UK government has broken (shouldn't be too hard!), and then file a case. If the case is from an individual, then the European Court of Human Rights may be an alternative. (IAANL, so YMMV)
After a number of decimal places, nobody gives a damn.