The Operation Weeting arrest was named by sources as former News of the World chief reporter Neville Thurlbeck, who was previously held on suspicion of conspiring to intercept communications on April 5 last year.
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The new scheme aims to speed up the permission process and allow applicants to apply from overseas and work in Ireland.
Since January 2010 there have been 35 collisions on the Thames involving older boats.
IPPR North research says the figure rises to seven times per person when compared with Yorkshire and the Humber or the North East.