Reaction in Cairo to news of the British government's planned investigation into the Muslim Brotherhood was a mix of bemusement and concern.

In late December – four months after the bloody crackdown on supporters of ousted president Mohamed Morsi in which hundreds died – Egypt's military-led regime declared the Muslim Brotherhood a terrorist organisation.

In recent weeks, the Egyptian state and judiciary have signalled that their pursuit of suspected supporters and members of the outlawed brotherhood was continuing.

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