http://www.ck12.org Chapter 3. Making A Difference
£4.3 billion: the cost of London Heathrow Airport’s Terminal 5. (£72 per person in the UK.)
£1.9 billion: the cost of widening 91 km of the M1 (from junction 21 to 30, figure 28.4). [yu8em5]. (£32 per person
in the UK.)
Figure 28.4:The M1, from junction 21 to 30.