Why are sponsors and countries so keen to be involved in the games?
BBC World Service
Gillian Marles explores Scotland's special relationship with Russia.
BBC Radio Scotland
We explore how businesses can slash their energy costs.
BBC Radio Wales
Paul Lewis investigates set-up fees for cancelling insurance even before cover starts.
BBC Radio 4 FM only
BBC Radio 4 LW only
Making money in the 'sharing' economy is discussed by Evan Davis and guests. (R)
BBC Radio 4
Sunday 2 February 2014