We all secretly know that 20 minutes is the optimum length for a piece of theatre, and it's one of the best features of Jacksons Lane's Postcards festival that it programmes mixed (and varied) bills of short work. So here we have Lightning Ensemble presenting 1908 – Body and Soul, which takes a look back at London's first Olympics; Ian Marchant's 20 Hours and Counting, a solo juggling show harking back to the glory days of music hall; and juggler Frederike, working with Ilona Jäntti as director to perform three site-specific works around the Jacksons Lane building.