Attosecond and Free Electron Laser Science 2018 (AttoFEL 2018): International Conference at University College London, July 2nd-July 4th 2018, sponsored by CCPQ. Ultra-Short and Intense Laser pulses offer the means to observe, control and probe multi-electron effects during ionization and break-up of strongly-driven atoms and molecules. Moreover, Free Electron Laser facilities is a route to delivering XUV and X-ray pulses with intensities orders of magnitude larger than those provided by conventional synchrotron radiation sources. Ultra-fast and intense X-ray pulses open-up new horizons for probing and controlling the attosecond motion of inner-shell electrons in multi-photon multi-ionization processes. This conference aims to bring together theorists from the FEL and Attosecond-Strong Field Science communities to discuss and present recent advances in theoretical techniques developed to tackle multi-electron effects in ionization of atoms and molecules. Another goal of this meeting is to draw together theorists and experimentalists in order to identify the most interesting challenges that both communities will face in the future. Registration is now open.