"The Bilayers at ILL or BILL” has been a forum to gather scientists working with model membranes to meet and discuss scientific challenges, where the latest one at ILL 11-13 December 2019. This meet has attracted 150-200 scientist in the field of biomembrane biophysics. Now we are planning for the next to take place in Lund, the site of ESS and Max IV on the 13-15 June 2022. Suitably we will call the meeting Bilayers at ESS – BESS. This is all in the spirit of the close collaboration between ILL and ESS. The aim of the workshop is to bring together researchers working with on the physico-chemical characterization of lipid bilayers by means of experimental (including scattering and direct space techniques) and theoretical approaches.