We propose to examine the structure of anatase titanium dioxide (TiO2) obtained by different synthetic techniques (including hydrothermal and sol-gel) and of different particle sizes. Anatase TiO2 is an important functional material with applications in catalysis, photovoltaics and advanced electronic devices. The existence of a complex interplay between size, function and structure of nanomaterials is well known but such relationships are rarely well understood. We therefore aim to make a significant contribution to the understanding of the anatase TiO2 system by performing a detailed study of a range of nanomaterials and correlating structural features and distortions with both particle size and synthesis route. The use of neutron total scattering will enable us to study structure across a range of length scales: something which is hugely important for nanomaterials.