The Government has been taking advice, but not from here. I think that you will find that the UK government is slightly frustrated with the attempts of a unified, global solution not coming to fruition. Not all nations will allow armed vessels in to port. Egypt will not allow armed civilian vessels to utilise the Suez canal, for example. This solution has been looked at for a number of years.
I believe that the arming of vessels is a short term solution to a much larger problem that the rest of the world will need to deal with. Piracy is only one facet of this problem. The problem being poverty, uncontrolled armed gangs, food shortages and water shortages. There is also a problem with terrorism using this method to fund themselves..
One thing to watch out for is escalation of weapons and tactics used by the pirates.