So the next Conservative Government will scrap the Contact Point database of children's details.

BBC: Cameron's data speech in full

It then combines this real-time information with ephemeris data, mapping, cellular base station and Wi-Fi access point database information, and other cloud-based aiding information using the SiRFusion platform.

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Contact Point is a vast database that holds the details of everyone under the age of eighteen in England, their name, address, gender, date of birth, school and health provider.

BBC: Cameron's data speech in full

From their database, the authors find that a one percentage point difference in taxes results in a 0.225% reduction in the share price at takeover, and calculating backwards this indicates that the effective tax rate is 31% of the statutory one.

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