The evidence against the Silvertown tunnel, next to Blackwall, is currently much more compelling than anything produced to support it. The borough already suffers illegal levels of air pollution, which will only get worse with new road build, and research points to markedly more traffic, not less, should extra capacity be built in this location. There has been precious little attention given to greener and cheaper solutions to current problems.
The current proposals have precious little to back them up whilst research from our local area and across the world points to the huge problems that could result. Key amongst those is the negative affect on the health of Greenwich residents who already suffer with unacceptably high levels of air pollution.
The probability is that these new roads will fill up overnight, as they did when the M25 and the second Blackwall tunnel were built, thereby solving nothing. We in Greenwich already have enough in the way of high volume, large roads and we don't want more of our green spaces and family homes bulldozed for yet more.