It was announced last month that the government intends to axe the UKFC in an attempt to curb spiralling debts, a move that WENN claims angered the 80-year-old screen legend and prompted him to pen a letter criticising the decision to Chancellor of the Exchequer George Osborne.
"I cannot stress how important the Film Council is to me," he wrote. "I have been following the news of its proposed abolition with great interest. The prospect of losing such a valuable resource is of great concern as we contemplate future projects."
Referring to the filming of upcoming thriller Hereafter, Eastwood continued: "The Film Council gave us the crucial detailed information we needed to make our decision to shoot in the UK, with information on tax credits, availability of crews and other support. Without such assistance in the early stages, the likelihood of a London shoot would have been greatly diminished.
"Locales with active, knowledgeable film commissions are far more appealing to us as producers... I respectfully request careful consideration of these concerns in deciding the fate of the UK Film Council."
Numerous other A-list actors, including Liam Neeson, Emily Blunt and James McAvoy, have condemned the government's plans to retire the UKFC, while an online petition to save it has already collected tens of thousands of signatures.