This is one time when the two-character headcode that the

Southern Region of BR still used (officially or unofficially, I am not too sure?) enabled me to discover and correct my initial identification using the wonders of the internet. Back in 1981 using just the working timetable I had this service down as a Waterloo to Salisbury semi-fast service. But, wearing an 89 headcode would suggest something else. Indeed, it has subsequently been established that it was actually the 10.10 Portsmouth Harbour to Bristol Temple Meads service. It is seen passing Salisbury Tunnel Junction's up home bracket signal at a spot some distance west of the junction with a short tunnel between it and the junction itself with 33119 leading. Notice the soon-to-be-commissioned colour light on the other side of the bridge that would replace the bracket signal. Incidentally, this particular locomotive was the prototype of the 33/1 sub-class built for push-pull working with 4TC EMUs and the only one to ever wear a green livery (except for any others subsequently repainted).