SIR - The shortsightedness of the plan to build 10,000 more houses around Worcester beggars belief. An already overloaded road system will become gridlocked. All the health and emergency services in the city will find it increasingly difficult to cope with a population increase of at least 20,000.

A 25 per cent increase in sewage and refuse may be beyond the current capacity of the appropriate services. Carbon monoxide emissions will increase and the destruction of many trees will cause more of it to remain in the atmosphere. Many forms of wildlife will lose essential habitats.

The demise of many civilisations has shown that humans can exist only so long as essential resources are sustainable. Instead of building more and more houses, I suggest that the number of immigrants allowed into our country does not exceed our annual death rate. In the long term, I suggest worldwide restrictions are placed on the research into means to further increase human lifespan, otherwise civilisation will eventually be its own executioner.

I M JARVIS,

Worcester.