Both he and Peter Waddington, a former policeman and now an authority on crowd control at Wolverhampton University, are sceptical about plastic bullets (or baton rounds as the police call them).

从前担任警员，现为伍尔弗汉普顿大学人群秩序控制方面专家的彼得•沃丁顿（Peter Waddington）和马丁均对塑料子弹（警察称其为防暴子弹）持怀疑态度。

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Meanwhile, police expert Professor Peter Waddington from Wolverhampton University says the tactic owes its genesis to a dilemma faced by officers confronted with a noisy, and possibly violent, crowd.

BBC: Police 'kettle' tactic feels the heat

By 1957 the machine was being outstripped by faster, smaller computers and it was handed over to the Wolverhampton and Staffordshire Technical College (more recently Wolverhampton University) where it was used to teach programming and began to be called the Witch (Wolverhampton Instrument for Teaching Computation from Harwell).

BBC: Two-tonne Witch computer gets a reboot

Murandu, a senior lecturer in adult nursing at the University of Wolverhampton, said he was very pleased by the results.

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