Over three quarters of media businesses were challenged by HMRC over R&D claims, according to a survey by Tax Experts. The research found that 40% of firms made at least one claim for R&D tax relief, but only 24% had claims approved without challenge in the past year. A third had claims challenged before approval, and another third had claims declined. Tax Experts expressed concern, noting that media businesses are struggling to secure these vital R&D tax reliefs.