Two years later, she founded the Greenwich branch of the WSPU. As its first secretary she took part in the 'Black Friday' demonstrations. She was able to attend because she used an adapted tricycle. She was arrested after the police had capsized her from the trike. Billinghurst knew that she was helpless when this happened, but she was quite prepared to take the added publicity to benefit the suffrage cause. The police once exploited her disability leaving her in a side street after letting her tyres down and pocketing the valves.