Ms Carolan Lennon:

Yes, if one looks at the data, the fault rate on copper is twice that of fibre. Where there is a whole fibre network and one has got rid of the copper, it affects the level of faults reported. Copper loves lightning, it is not great with water, and so on, whereas fibre is much more resilient and, therefore, there is a much more resilient network with an all-fibre network.