OXFORD City ace Hannah England will be something of an unknown quantity when she begins her Olympic 1,500m campaign in the heats today (11.50).

The 25-year-old won world silver in Daegu last year, but the Achilles ‘spike’ injury she suffered in May means we are not what shape she is in.

England has been drawn in heat one where Bahrain’s Maryam Yusuf Jamal, Russia’s Tatyana Tomashova and Ethiopia’s Abeba Aregawi will be among her rivals.

The first six in each of the three heats qualify for the semi-finals, plus the next six fastest times.