Jurassic World’s cinema release is still a few days away, but it looks like the dinosaurs have decided to visit London early. A trio of ferocious velociraptors took over Waterloo train station, while a Mosasaurus “aquarium” lurked in the passages below.

And right in the middle of all this was Jack Horner, the world-famous palaeontologist who has consulted on all four films in the Jurassic Park franchise.

We stopped to ask Jack (who is currently working on a project to turn a chicken into a real-life dinosaur) about the genetic chicanery that could be involved in recreating Jurassic World’s prehistoric beasts.