During the Whiteball blockade, there is also a special infill HST working from Taunton to Birmingham and back. The timings are:
1V44 0611 Leeds to Taunton (New St dep 812, Taunton arr 1015)
1Z85 1051 Taunton to Birmingham New Street (New St arr 1256)
5T86 1306 Birmingham New Street to Birmingham New Street (New St arr 1358)
1Z86 1420 Birmingham New Street to Taunton (Taunton arr 1615)
1E63 1651 Taunton to Leeds (New St arr 1856, Leeds arr 2102)
Note the sojourn has an anti-clockwise empty stock move round the Camp Hill loop, to release Platform 11 at New St for an hour.
This happened in the previous (June 18) blockade too. Here is a picture of it on the Lifford Curve:
https://flic.kr/p/27aj7qY