East Coast rail had the most late-running trains last month, according to figures from Network Rail.
East Coast was able to run only 82.8% of trains on time, making it the poorest-performing train operator.
Across all train companies, a total of 91.4% of trains ran on time in the period March 3 to March 31, compared with 93.4% for the same period last year.
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Fine and dry throughout the day with some good long sunny spells, feeling hot in the afternoon sun. Highs of 29 deg C (84 deg F).