When Nadia is showing David the hall, it cuts to Dawn holding a pair of steps in the kitchen too soon, then returns to the scene in the hall where Nadia and David are now replaced by Neil and Nigel.
Boom microphone visible when David, Tessa and Alan are performing acrobatics in the yard.
Boom microphone is visible during wide shot after David tells Tessa and Alan he's always wanted to be in the circus.