In co-operation with David Sproxton, a friend of his youth at school together in Woking in the 1960s, he realised his dream of "making and taking an animated movie".

In 1977 they created Morph, a stop-motion animated character made of Plasticine, who was usually a comic foil to the TV presenter Tony Hart.

With his amoral friend Chas, he appeared in a series of children's art programmes including Take Hart, Hartbeat and Smart.

They were called "On Probation", Sales Pitch, "Palmy Days", "Late Edition" and "Early Bird".

Lord, Park and Sproxton developed and finalised their style of detailed and lovingly designed clay animation characters from stop motion techniques (though directed by Stephen Johnson their claymation is shown in the music video "Sledgehammer" (1986) by Peter Gabriel).

Other awarded productions by Peter Lord are Chicken Run (2000), the first feature film from Aardman and the Academy Award-winning Wallace & Gromit: The Curse of the Were-Rabbit (2005).

In that same year, Lord (along with Sproxton) visited the "Aardman Exhibit" at the Ghibli Museum in Mitaka, Tokyo, Japan, where he met Hayao Miyazaki.