By Jon Robinson The popularity of films such as Barbie and Oppenheimer failed to drag the company behind Showcase Cinemas out of the red despite boosting its sales, it has been revealed. The UK arm of National Amusements has reported a pre-tax loss of £13m for the year to 4 January, 2024, according to newly-filed accounts with Companies House. The latest loss comes after the business also posted a deficit of £3m in the prior 12 months. The last time National Amusements reported a pre-tax profit was the £3.2m it achieved in the year to 3 January, 2019. Since then it has lost more than £60m. Whe…