One lane closed and slow traffic due to broken down vehicle and recovery work on A19 Southbound at A179 / B1280.
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The band played a hit-packed set including Everyday I Love You Less and Less, Ruby and I Predict a Riot.
The police force say events taking place over the bank holiday weekend will still see an increased police presence.
Stockton Stages takes place from Thursday, July 20 to Saturday, July 22 in Stockton town centre.