The research firm revealed that 13.2 percent of all mobile phone's sold in Q2 of 2010 run Google's operating system, compared to just three percent in Q1.
GfK also said that handets with 'Advanced Operating System', or phones that can run independent compatible applications, now make up 66.7 percent of all of the handsets in the UK on contracts, compared to 55 percent in Q1 of 2010.
The popularity of the HTC Desire and Samsung's recently launched Galaxy S – both of which run Google Android, has no doubt been partly responsible for the increase in sales of smartphones running the open-source OS.
"The figures suggest an increasing number of consumers are now asking for Android handsets by name," said GfK analyst Megan Baldock.
"Operating Systems are no longer simply a by-product but a key selling point in their own right."
The news comes just days after Google announced that 55 percent of all Android smartphones are running Éclair, the latest version of the mobile phone operating system.