Women ages 18 to 34 account for 27% more of total time spent online in the UK than men their same age, according to Nielsen//NetRatings data released in May 2007.
For every hour Britons spend on computers, 13 minutes are accounted for by 18-to-34-year-old women.
eMarketer senior analyst Karin von Abrams noted "women between 18 and 34 are at a stage of life where the Internet is an invaluable tool, whether they are researching universities, keeping in touch with friends from school, gathering information for college assignments, job-hunting or raising children."
Alex Burmaster of Nielsen said, "Companies who understand this [demographic] composition when providing services or content through the Web or simply advertising online will maximise their chances of success in the Internet of the future."
The UK's Office for National Statistics (ONS) reported in August 2006 that 64% of men used the Internet "every day, or almost every day," as compared with 54% of women.
The ONS data indicate that despite the frequency of their online visits, men do not spend as much time during those visits as women.
Nielsen found that the UK Internet population is split almost equally between males (51.5%) and females (48.5%). Nielsen counted all users ages 2 and older.
As of August 2006, MORI reported that men comprised 53% of the UK's Internet users. MORI's sample included users ages 15 and older.
The difference between the Nielsen and MORI data indicate that, as in the US, the UK's Internet population promises to trend increasingly female.
Read more about UK Internet users. Read the eMarketer UK Online report.