Sapperton Tunnel is divided into two sections, with a short open gap towards the southern end. On 21 March 2011, 158880 emerges from the long section and is almost instantly about to enter the short section whilst working the 2B90 09:40 Cheltenham to Swindon First Great Western service. This convenient roadside viewpoint was until recently totally impossible due the vegetation surrounding the tunnel. However, it's not easy even now, as the constant road traffic noise makes hearing the approaching train very difficult. 158880 is on long term hire to First Great Western and its South West Trains livery adds a bright splash of colour to a dull day.