CLICK). The Science Museum website hasn't been updated at the time of writing and its search facility couldn't find Kelvin Okafor! Groan! This is the trouble with overly complicated websites. They need a programmer to update them. Even its blog takes ages to load. I've emailed the museum and will update this post if I get a reply.
Update: Kelvin Okafar's drawings are to be found in the Watercolours + Works on Paper Art Fair at the Science Museum from 31 January to 3 February, entry £15 (CLICK).