I thank my hon. Friend for that interesting intervention. All the calculations indicate that on the day the lower Thames crossing opens, there will be a 20% reduction in vehicles using the Dartford crossing, and that after 15 years that reduction will still be at around 14%. The crossing should also help to cut some traffic on the A13 in her constituency and from junction 30 of the M25, so there are advantages for her constituents as well as a clear advantage for mine and for the UK economy.