Gina Miller has endured months of death threats and racist taunts for her decision to challenge the legal basis of Brexit, and while hopeful of victory on Tuesday, she is not looking forward to it.

"I think next week will be terrible," she said ahead of the Supreme Court ruling on whether the government or parliament holds the power to start pulling Britain out of the European Union.

For many, the 51-year-old businesswoman has become a national hero for insisting MPs have the final say. For others, she is the "black widow spider" seeking to frustrate the result of last June's referendum.