It appears that France and the UK are indicating they are ready to violate the existing bans.
http://www.euronews.com/2013/03/14/france-signals-it-may-break-eu-arms-embargo-on-syria-with-britain/
I believe the arms embargo is subsequent to several EU Council decisions, the latest of which is scheduled to expire in May. After that, who knows: http://www.sipri.org/databases/embargoes/eu_arms_embargoes/syria_LAS/eu-embargo-on-libya
EU arms embargo on Syria
In May 2011 the European Union imposed sanctions on Syria in response to the violent repression by Syrian government forces of peaceful protests. It called on the Syrian security forces to exercise restraint. Council Decision 2011/273/CFSP and Council Regulation No 442/2011.
The sanctions included an embargo on the supply of arms, military equipment and equipment which might be used for internal repression.
In January and June 2012. in order to strengthen the embargo, several EU Council decisions were made during that specified in more detail the items and services banned under the arms embargo. This included telecommunications monitoring and interception equipment and certain goods that might be used for the manufacture and maintenance of equipment which might be used for internal repression. Council Regulation EU No 36/2012 18 January 2012 and Council Regulation EU No 509/2012 16 June 2012.
In July 2012, in an effort to address the problem of arms and other embargoed items being transported from other countries through the EU to Syria it was decided that EU Member States should inspect all vessels and aircraft bound for Syria within their territories and with the consent of the flag state if they have reasonable grounds to believe that the cargo may include sanctioned items. Council Decision 2012/420/CFSP 23 July 2012.
In November 2012 the EU decided to extend restrictive measures until 1 March 2013, imposing a renewal term of only three month instead of one year. Council Decision 2012/739/CFSP 29 November 2012.
In February 2013 the EU decided to renew the restrictive measures against Syria for a further three months, amending them so as to provide greater non-lethal support and technical assistance for the protection of civilians.
Last updated on 21 February 2013
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EU Council Decision 2011/273/CFSP (2011)
EU Council Regulation 442/2011 (2011)
EU Council Regulation 36/2012 (2012)
EU Council Regulation 509/2012 (2012)
EU Council Decision 2012/420/CFSP (2012)
EU Council Decision 2012/739/CFSP (2012)
EU Council conclusions on Syria, 3222nd Foreign Affairs Council meeting (2013)