‘My mum's meeting my dad for the first time’
Julia always knew her mums used a sperm donor. She didn’t know that meant she had 19 siblings – until now.
Follow her remarkable journey to discover her "very extended family".
Produced by the BBC's Hannah Long-Higgins and Ben Davis.
Filming and editing Hannah Long-Higgins; additional editing Nick Watson and Vara Szajkowski; audio Ben Davis; graphics Simon Martin.
Viewers in the UK can see the programme on the BBC News Channel on Wednesday 28 August at 03:30 GMT. It will also be available on iPlayer.