Complex sentence: Formerly known as the'Double Up', then relaunched as the'Clubcard Voucher Exchange', the Clubcard Boost was the new name for Clubcard Rewards; it launched in 2013.
Split into simpler sentences: Formerly known as the'Double Up', then relaunched as the'Clubcard Voucher Exchange'. The Clubcard Boost is the new name for Clubcard Rewards and the Clubcard Voucher Exchange; it was launched in 2013.