TfL are consulting on their initial thoughts for the Angerstein roundabout.  These are quite radical and include removing the roundabout and  restricting access to the motorway in an effort to make the junction safer for cyclists and pedestrians.  Details can be found here

There is also a drop in session on

Saturday 8 February 2020 (11:00 – 16:00) at the

Greenwich Suite, The Valley, Floyd Road, Charlton, London SE7 8BL

Unfortunately this consultation is buried in another consultation about improvements to cycle and pedestrian routes along the A206 from Anchor and Hope Lane to the Woolwich Ferry roundabout.  This means it is difficult to comment solely on the Angerstein roundabout proposals because the  ‘Have your say’ link takes one to a questionaire about all the proposals including the Angerstein roundabout.

However there is also an email address

The full consultation on the A206 improvements including the Angerstein roundabout can be found here

The consultation ends on 16 February.