My hon. Friend is on an important point, and, as a former housing Minister, I feel strongly about what he is saying. Whereas even five or 10 years ago 50 per cent. of housing was in the private rented sector, the figure is now down to about 5 or 6 per cent. Is not the central issue the landlord's return on investment—in addition to the protective or anti-protective measures to which my hon. Friend has referred?