Quick answer
When did the 3PM blackout start?
It dates back to the 1960s.
Where it came from
In the 1960s Burnley chairman Bob Lord argued that televised football would empty lower league grounds. The Football League agreed, and live football on a Saturday afternoon was kept off TV.
How it works today
UEFA Article 48 lets each country set a two and a half hour window with no live football on TV. England and Scotland use 2:45PM to 5:15PM on Saturdays.
Who it affects
Every fan whose team is not picked for TV. Overseas viewers can watch these games, but UK viewers cannot through any UK broadcaster.
Will it be scrapped?
Clubs and fan groups have debated it for years. Lower league clubs still rely on it, so a change is unlikely soon.