Hydrophobins are small compact secreted fungal proteins which are strongly surface active and adhere to both hydrophobic and hydrophilic surfaces. Their strong surface activity gives rise to powerful emulsion and foam stabilising properties. Understanding their adsorption behaviour in the presence of other proteins and surfactants is key to an extensive exploitation of this unique molecule. We have established the surface properties of hfb2 with a range of conventional ionic surfactants, but preliminary measurements in the presence of some nonionic surfactants indicate some significant differences in behaviour. We propose to explore these differences in more detail in order to establish and explain more precisely the origin of those changes in surface properties.