For those curious to see what BT Sport is all about then weekdays on the weeks starting Monday 7th October and 14th October (free access starts 7pm each evening) will see those with Freeview - channel 57 or BT TV able to watch for free.
This 'open' October event will finish with BT Sport 1, BT Sport 2 and ESPN opening up over the weekend of the 26th to 27th October, starting at 6pm on the Friday. This free period will include live rugby from the Aviva Premiership, including Bath v Gloucester, Northampton v Saracens and Wasps v Leicester and the Crystal Palace vs Arsenal match in the Barclays Premier League. This weekend of sport is accessible on more platforms i.e. Freeview, Sky, Virgin Media and BT TV.
Obviously the promotion is meant to tease people into signing up to a BT Broadband consumer service where they can get BT Sport for free, but it is also available on the Sky satellite system via a £12 monthly subscription (HD is an extra £3/month), or those with Virgin Media cable TV can add it to their package line-up, XL TV customers get the channel already in their package.