Be careful about putting film on the glazed panel, if the door reveal isn;t intended to take the load then you could have a shattered but still whole glazed panel fall on you.
Building Regs part K states (its Section 5 P31 onwards) that glazing will meet the requirements with the following:
if it breaks, will break safely,
is robust + in small panes,
or is permanently protected.
The requirement for safe breakage will be met if it complies with one of the following:
a small clear opening only, with detached particles no larger than the specified maximum size,
disintegration with small detached particles,
broken glazing in separate pieces that are not sharp or pointed
Glazing material would be suitable for a critical location if it complies with one of the following:
satisfies the requirements of Class 3 of BS EN 12600 or Class C of BS 6206
is installed in a door or in a door side panel and has a pane width exceeding 900mm and it satisfies the requirements of Class 2 of BS EN 12600 or Class B of BS 6206.
It sounds like it does.