Rehearse with a timer and cut until it fits with room to spare

Running over time is common and costly: the panel may stop you before the demo or the results. Sheffield Hallam's viva guidance suggests practising telling the story of your work within a time limit; for a presentation, do it with an actual timer.

A simple process:

1. Write the slides, then rehearse once with a timer without stopping.
2. Note which slides took longest and whether the demo fitted.
3. Cut slides or merge them until you finish with a minute or two to spare.
4. Rehearse again, including handovers between team members.

As a rough guide, one slide per minute of speaking is often comfortable, but your own rehearsal is the real measure.