By Ashley Cowburn & Lizzy Buchan Top bosses from the Post Office and the firm behind the flawed IT system that resulted in postmasters being wrongfully convicted have been hauled over the coals by MPs. Fujitsu Director Paul Patterson said the Japanese firm was “truly sorry” for its role in the Post Office scandal – and said it had a “moral duty” to contribute to compensation. He said the company was aware of “bugs and errors” in its Horizon programme and it provided evidence to the Post Office which led to staff being wrongly accused of swindling cash. Meanwhile, Post Office boss Nick Read bla…