EastEnders star Lisa Hammond, aka bolshie Donna, knew very little about her paternal grandfather Harry Hammond.

As she delves into Harry’s past, Lisa discovers the story of the 18 months that he spent as a prisoner of war in Germany during World War Two, and the psychological issues he faced afterwards.

Meanwhile, on a lighter note, devoted townie Lisa, who detests the countryside, is hilariously put out when she discovers that she has ancestors from rural Wales!