Since 2022, the LHC physics programme has been expanded into new areas by two experiments studying collider neutrinos and searching for long-lived weakly interacting particles produced in the collisions: SND@LHC and FASER. These experiments, located symmetrically about 500 m away from the ATLAS interaction point, aim to provide measurements of neutrino interactions in previously unexplored energy ranges between \(E_\nu \in [10^2, 10^3]\) GeV, as well as to extend the experimental sensitivity to long-lived dark sector particles into new areas previously inaccessible at the LHC. The SND@LHC and FASER detectors utilise a combination of emulsion cloud chambers for neutrino identification via precise vertexing, and electronic detectors used for tracking, timing and calorimetry. This document presents a short review of the key aspects of detector design and performance of the two experiments.