Although he will not become a member of staff, Sendall will be based at the post house and will work on projects with Concrete, making use of the Concrete team and resources.
Concrete will, in turn, will, also make use of his design skills.
A spokesperson described it as ‘a mutually beneficial relationship.'
Sendall's credits include titles for ITV's Formula One and World Cup coverage and design work for BBC's Panorama series.
A graduate from the Royal College of Art, Sendall is also a professional photographer, digital artist and a Fellow of the British Institute of Photography.
"Morgan has an amazing track record for design and intricate storyboarding,” said Concrete creative director and head of graphics Chris Jennings. “Morgan and I were founding directors of design group XTV and prior to that, we worked at Thames Television. He will undoubtedly be an outstanding addition to our team at Concrete.”
Morgan said: "It is exciting to be based at Concrete and to be working amongst such a talented and friendly team."