Officials feared that Mofaz could face possible arrest upon landing after all efforts to secure him diplomatic immunity failed due to his current civilian status.
The embassy fears that like other Israel officials in the past, Mofaz will be pursued by pro-Palestinian groups, who use UK courts to file for arrest warrants.
According to channel 2 news, all efforts to secure diplomatic immunity for Mofaz failed, and the UK foreign office was unable to guarantee his immunity due to his current status as a private citizen.
Mofaz flew to London in order to attend the "Jewish News" conference Monday. The Israeli Foreign Ministry, the embassy in London, and the local Jewish community pressured local officials to allow his arrival without delay, however no guarantees where made.
Former high ranking Israeli officers and officials have largely avoided travel to the UK for the last decade, out of fear that arrest warrants would be issued against them.
An arrest warrant was issued for former Foreign Minister Tzipi Livni in 2009 over her 'involvement' in Operation Cast Lead.
Major General Doron Almog was forced to wait on board an ELAL plane at Heathrow in 2005, after he was alerted to the presence of police officers at the gate with an arrest warrant in his name. Almog was in London to raise money for the 'Alleh' organization, which houses children with mental illness.
Former Defense Minister Mofaz and MK Amir Peretz where evacuated from London during a visit, when information came about that an arrest warrant was issued for them.
Some of the former and current officials who have avoided the UK are; former Shin Bet head Avi Dichter, Moshe Ya'alon, Dan Meridor, and Netanyahu's Military attaché Yochanan Loker- who served as head of the air force directorate during cast lead.
The law which allowed pro-Palestinian groups to seek arrest warrants for Israeli officials was changed in 2011. The new amendment is meant to prevent frivolous use of the UK's legal system for political gains against Israel.
The Foreign Ministry in response: " Two diplomats from the London embassy are on the way to great Shaul Mofaz at the airport. We are ready to deal with any devolpments."