Filmmaker Ken Loach fears his final movie will never be completed as the old fashioned editing equipment he insists on using is rapidly becoming obsolete.

The British director is working on the period drama Jimmy's Hall and has signalled he will be walking away from movies after it is finished so he can concentrate on shooting documentaries.

Loach is using an analogue editing machine to fashion the final cut of the film but he is running out of the specially-numbered tape and may have to mothball the movie when his current supplies end.

He tells, "We're making a start and putting the scenes together. But we're finding that one or two of the support services are fading and one of those is in supplies of numbering tape.

"We're scratching around to find if some numbering tape still exists so we can identify the sound and picture so the film remains in sync."