Soft drinks, also called soda or pop, were a type of carbonated beverage.
The Bane created the soft drink Bubble Shock! as part of their plan to take over the Earth. (TV: Invasion of the Bane)
Lemonade in Britain was carbonated, while American lemonade was "meant to be flat." (TV: Dead of Night)
When Ace's mum's boyfriends took her to pubs, they would give her some fizzy drink. (PROSE: Timewyrm: Genesys)
While on Hogsumm, Bernice Summerfield nearly had her brain melted by Bubbleshake, a highly addictive soft drink some teenagers stranded on the planet had brought with them. (PROSE: The Highest Science, AUDIO: The Highest Science)
The Tenth Doctor drank a can of pop he received from Barbara while imprisoned in Dreamhome. (PROSE: Sick Building)
In 2007 of Pete's World, the President of Great Britain noted to Pete Tyler that his Vitex tasted like pop. Pete cheerfully replied that it was pop. (TV: Rise of the Cybermen)