Glass fibres with multi-functional properties were developed by using i) Polymer-based nanocomposites containing epoxy, carbon nanotubes and graphene, and ii) Titanium dioxide nanoparticles. The mechanical, electrical, barrier and photocatalytic performance of fibres were studied. Raman and electrical responses of fibres under mechanical load were coupled for in situ sensing of deformation in composite structure. The low cost and excellent flexibility of glass fibres make them ideal materials as supporter to deposit photocatalytic nanoparticles for the removal of organic pollutants in water.