Grant Ferrett investigates the sanctions imposed on Zimbabwe by Britain and Europe.
BBC Radio 4
Michael Robinson investigates the legacy of toxic lending by British banks.
BBC Radio 4 FM only
The role played by Egypt and its President Hosni Mubarak in the Gaza crisis.
Allan Urry investigates the sale of counterfeit drugs to GPs, hospitals and chemists.
Jon Manel on the increasing numbers of UK couples having children using surrogate mothers.