She's the self-proclaimed Beyoncé of the House of Lords, calling herself a 'single lady' and an 'independent woman'. Baroness Tina Stowell is the Leader of the Upper House. She was in the spotlight this week after the Lords defeated the government over tax credits.

After leaving school at 16, Baroness Stowell's journey to this position has been a discreet one. How will she negotiate the potentially testing times ahead as the government contemplates reform of the House of Lords?

Presenter: Edward Stourton. Producers: Charlotte Pritchard and Peter Snowdon.