I was 15 when my 'father' called me into the living room and brutally told me I'd been adopted. Now, after 50 years, I've finally tracked down my real dad - and the firebrand union chief who's my long-lost half-sister
Sharon Graham in full flight is something to behold. Fist aloft... blazing rhetoric... cries of solidarity. Spellbound comrades cheer her every exhortation.