HC Deb 08 December 1970 vol 808 c87W
Mr. Trew

asked the Secretary of State for the Environment what is the estimated cost of the proposed Thames flood barrier, excluding the cost of any downstream flood defences associated with or arising from it.

Mr. Graham Page

The Greater London Council estimate that in terms of current prices, a drop-gate barrier at Silvertown would cost £35 million and a rising sector gate barrier £23 million.