According to Jennings - Anthony Buckeridge

The boys at Linbury Court Preparatory School are eager to speed up the progress of space travel, and none more so than Jennings, whose first task is to find a suitable helmet. But is it really a good idea to take a dome-shaped glass-case, which previously housed a stuffed woodpecker, and place it over his head? Petrified paintpots! Jennings and Darbishire's luck is in when they hitch a ride with an international cricketer, and could it be that they've done something right for once when they attempt to apprehend a suspected burglar? Bat-witted clodpoll!