Four aikido techniques against maegeri (front kick): ikkyo, kokyuho, iriminage, and kotegaeshi. Here the kick is chudan maegeri (to the belly) but the aikido techniques are quite the same against jodan maegeri (to the head).
Stefan Stenudd is 6 dan Aikikai shihan. The attacker is Tony Johansson, and Mattias Enguis held the camera. For more on aikido, see: