From my experience, the biggest mistake companies make is focusing only on price instead of value. A strong corporate video should not just look good, it should communicate your message clearly and support your business goals. You want a team that understands storytelling, branding, and audience engagement, not just camera work. It also helps if the agency offers a collaborative process, guiding you from concept to final edit so nothing feels disconnected. When I was researching options, I found that DreamingFish London stood out because of their structured yet flexible approach. They combine creative thinking with practical execution, which is rare.