The trust, in special measures for two years, says the 30 vehicles will help cope with winter demand.
Poor accountability was to blame for severe rail disruption last May, a regulator has said.
The Consumer Council for Water tells firms to improve customer service and reduce complaints.
Home-grown Surrey bid for more titles
Billy Monger meets ex-F1 driver Alex Zanardi
Surrey enjoy another dominant day against Somerset, putting themselves in contention to win by an innings for the sixth time in 2018.
Somerset host Surrey in County Championship Division One - live BBC local radio commentary
About these results
Breakfast on BBC Surrey
30 years of much-loved on screen duos
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