 The crowd was addressed by Neurosurgeon Tipu Aziz, Dr Simon Festing ( Executive director of the Research Defense Society), and Liberal Democrat MP Dr Evan Harris, amongst others.
<fluency>  The crowd was addressed by Neurosurgeon Tipu Aziz, Dr Simon Festing ( Executive director of the Research Defense Society), and Liberal Democrat MP Dr Evan Harris, amongst others.
 The crowd was addressed by neurosurgeon Tipu Aziz, Dr Simon Festing ( Executive director of the Research Defense Society), and Liberal Democrat MP Dr Evan Harris, amongst others.