NatCen Social Research (NatCen) carried out the fieldwork for Natsal-3. NatCen is Britain's largest social research institute and has been responsible for the fieldwork in all three Natsal surveys.

NatCen sets the benchmark for high quality, ethically conducted social research. They are leaders in the UK in quantitative surveys using random probability sampling. NatCen's work is carried out by experienced researchers using innovative, high quality research methods, earning them an international reputation for delivering robust and rigorous research.

Fieldwork started in September 2010 and was completed in August 2012.