B*Witched are an Irish girl group consisting of twin sisters Edele and Keavy Lynch, Lindsay Armaou and Sinéad O'Carroll. Originally active between 1997 and 2002, they enjoyed success in both Europe and North America between 1998 and 2002, releasing two albums and eight singles, all of which made the UK Top 20. Their first four singles, "C'est la Vie", "Rollercoaster", "To You I Belong" and "Blame It on the Weatherman", all reached number one in the UK Singles Chart and the group having sold over 3 million albums worldwide.

The UK Singles Chart is compiled by the Official Charts Company (OCC), on behalf of the British record industry, listing the top-selling singles in the United Kingdom, based upon physical sales, paid-for downloads and streaming. The Official Chart, broadcast on BBC Radio 1 and MTV, is the UK music industry's recognised official measure of singles and albums popularity because it is the most comprehensive research panel of its kind, today surveying over 15,000 retailers and digital services daily, capturing 99.9% of all singles consumed in Britain across the week, and over 98% of albums. To be eligible for the chart, a single is currently defined by the Official Charts Company (OCC) as either a 'single bundle' having no more than four tracks and not lasting longer than 25 minutes or one digital audio track not longer than 15 minutes with a minimum sale price of 40 pence. The rules have changed many times as technology has developed, the most notable being the inclusion of digital downloads in 2005 and streaming in July 2014.