Increased CO2 emissions from economic activity are leading to climate warming and acidification of the upper ocean. Mitigating these effects raise unprecedented challenges in engineering the habitability of our planet. The potential advantages of CCS for the UK are outlined. Future sources of oil, coal, and especially the vulnerability of gas, are discussed. The benefits of deep geological CCS in EOR, depleted gasfields, and aquifers are outlined. Particular highlights are placed on problems of CO2 retention in the deep subsurface for required timescales. Government issues of: Value, Ownership, Monitoring, and Regulation or Licensing are critical inhibitors to any large–scale development of CCS. Opportunities for some middle–scale CCS onshore on the UK are outlined.