From what I remember the HSTs started being painted in what we used to call ‘Original Intercity livery’ (actually Intercity Executive livery) in the mid 80s. Maybe about 1983/84? That’s the scheme pictured in the photos.
In about 1987 this was then superseded by ‘Intercity Swallow livery’ which is the scheme 43185 is currently painted in.
The original Intercity livery followed the original blue, grey and yellow livery in that it had the same area of yellow as before that wrapped around the front and along the sides as shown.
Some power cars lasted like this for quite a while but I’m not sure when the last one received (perhaps when it went through works?) the updated ‘Swallow’ livery.
Power cars were swapped about a fair bit and it wasn’t unusual in the late 80s to have one power car in Swallow, one in original Intercity and the coaches in between in blue and grey or indeed other combinations until the whole fleet were painted in Swallow which I’m pretty certain eventually happened.
I remember someone saying to me as an HST arrived in Exeter some time around 1988/89 maybe? That it was the last rake of coaches in blue and grey.
I remember on here having a discussion about whether all three liveries of power car were ever lined up together but I don’t think any of them lasted in blue and grey after spring 1987 unless anyone knows any different?
God I enjoy a bit of 1980s paint wibble...
