National Insurance (NI) tax funds social security programmes and enables you to access certain benefits. Once you've got enough credit in the tax year, you've then qualified for that tax year's National Insurance.
Real Madrid's players did not train at La Cartuja Stadium in Seville ahead of Saturday's King's Cup final against Barcelona. The club also boycotted Friday's press conference. This is in response to two referees who complained about the pressure they are under.