"This was abrazen robbery, and appears to have been well planned and thought through.Fortunately no one was injured. The store was very busy and this will have beena shocking thing for people to witness.
"I'd like to thank those members of the public who stepped in and detainedour two suspects. Their quick thinking and brave actions have helped ourinvestigation."
More top news
A Labour MP tipped as a possible candidate for London mayor has admitted crashing into a motorcylist her second accident in just over a year
The 48-year-old man was held on suspicion of theft from heritage and protected sites.
A Met Police officer was left red-faced after attempting to stop a cyclist riding along a dedicated cycle path.