"In the study, the volunteers given modafinil performed significantly better at neuropsychological tests involving short-term memory and showed less impulsive responding and an increased tendency to reflect on the tasks they were given, " she said.

BBC: Pill to boost brain power

Unfortunately, without rigorous testing and accurate results with the aim of truly finding out how much stress the banking system can handle and adapting accordingly, these tests may not soothe in the short-term, but more likely leave markets extremely fragile when the next real-life test is had.

FORBES: Euro Higher As Stress Over Bank Tests Fades

Similar to the euro, traders will have to be extremely cautious in the short-term with this pair as the results from the European bank stress tests will also impact price here due to the large exposure Britain has to the economic realities in Europe.

FORBES: Broad Dollar Weakness Lifts European Currencies