By Dave Snelling Just when you thought there were already enough things to watch on your telly, something new is launching tomorrow and it’s totally free. The GREAT! Real service is being switched on from today, March 20, with the team behind it promising some “exciting content” will be beamed into living rooms across the UK. The channel, which will be available on both Sky and Freeview platforms, will include shows such as Heathrow: Britain’s Busiest Airport, Island Medics and Paddington Station 24/7. The idea behind it is that everything broadcast will show real life and all fully unscripted…