What you said was!
"My view is that good start would be to add a 4 miles of double track from Wolvercote to Hanborough (exclusive) to get Cotswold trains off the mainline and shorten the single line section, without having to rebuild any stations.
What I said was
There is already the facility to do this as there is a signal protecting the single line 500 yds past Wolvercote. However it would only help if nothing was coming along in the up direction.