Exclusive: Calls from Labour grow as 105 MPs write to PM urging ‘obvious’ step to alleviate cost of living crisisAndy Burnham is coming under increasing pressure from his own MPs to commit to improving paternity leave in the UK in the next budget, with more than a quarter of Labour MPs writing to the prime minister to urge him to take action.Ahead of the chancellor’s first budget next month, 105 MPs have written to Burnham calling on him to increase statutory paternity leave to help allevi