George Mavrantonis was called to the Bar by Gray’s Inn in 2016. He completed pupillage and subsequently joined Chambers in 2019. George specialises in public and administrative law through the sphere of immigration, asylum and nationality law. To date he has appeared in more than 650 such trials, for both Appellants and the Secretary of State.
He has been involved in a number of high profile, public interest and intelligence cases. He maintains a heavy immigration caseload and comes highly recommended for matters of deception, sham marriages, HMRC and DWP discrepancies, out-of-country video-link appeals, PBS, criminal deportation and bails, equally for drafting and representation.
In asylum law alone, George has had conduct of claims from more than 42 nationalities worldwide which amongst others have included: witches, royalty, publishers, LGBT+, victims of trafficking, children, draft evaders, and politicians.
George is regularly instructed to draft grounds for judicial review and he specialises in challenges against imminent removal (interim relief)
George has completed marshalling as a pupil at the European Court of Human Rights in 2018. In late 2019 he completed his legal secondment in Strasbourg giving him the appropriate edge in ECtHR process amongst his peers of similar Call.
He also accepts instructions as a member of the Attorney-General’s “Junior Junior” panel as well as the Secretary of State. He can accept instructions by members of the public where appropriate, as well as solicitors.
Earlier in his career he spent two years at the UK Home Office. He spent one year as a Judicial Review Litigator where he assessed the defensibility of judicial reviews lodged against the Secretary of State. For the next year George appeared as a Presenting Officer concentrating on all human rights and asylum claims, EEA, and entry clearance.
European Court of Human Rights
During his traineeship at the ECtHR in 2019, George was involved in a number of high profile Strasbourg cases. Amongst others, he has gained expertise specifically on the applicability and merit of Articles 2, 3, 6, 8, 9, 10, 13 and Article 1 (Protocol no. 7) of the Convention.
• Nicolaou v. Cyprus (app no. 29068/10) (Chamber case): violation of Article 2 (right to life)
• Jonsson and Hall v. Iceland (68273/14) (Grand Chamber case): allegation of violation of Article 6 (right to a fair trial)
• K (anonymised) v. the United Kingdom (Single judge, unreported): no violation of Article 6 (right to a fair trial)
• Drousiotis v. Cyprus (app no. 42315/10) (Communicated case): allegation of violation of Article 10 (freedom of expression)
• Muhammad and Muhammad v. Romania (app no. 80982/12): Article 1 Protocol No. 7 (procedural safeguards relating to expulsion of aliens)
George can be instructed for Rule 39 (interim relief) applications, pre-application review of Rule 47 procedure compliance as well as drafting grounds to the ECtHR.
Recent or notable cases:
• Holding v Secretary of State for the Home Department  UT (HU/04146/2019)
Decision of the First-tier was set aside following grounds of appeal drafted and George’s submissions in the Upper Tribunal.
• Secretary of State for the Home Department v. Kabul Bhatia  UT (HU/03190/2018)
George successfully appeared for Mr Bhatia in this matter concerning the correct test that ought to be used in ETS/TOEIC deception cases as per SM and Qadir v Secretary of State for the Home Department  EWCA Civ 1167.
• Franco v Secretary of State for the Home Department  UT (EA/03642/2018)
Matter involving the distinction between comprehensive sickness insurance (CSI) under the EEA Regulations 2016 and the ruling in Ahmed v The Aire Centre  EWCA Civ 988 in relation to permanent residence for EEA nationals, following a previous unsuccessful appeal in the lower court. George successfully appeared for the Appellant.
• Kasongo v Secretary of State for the Home Department  FTT (HU/16389/2019)
George persuaded the Court to depart from a previous adverse determination (Devaseelan) and to allow the appeal by establishing a link between music and political expression in the Congo based on the findings in AB and DM  UKIAT 118.
• Singh v Secretary of State for the Home Department  FTT (HU/06855/2019)
The Court referred to George’s “helpful skeleton argument” which enabled the Judge to ultimately allow the appeal on grounds of 20-years residence.
• AD v Secretary of State for the Home Department  FTT (RP/00113/2018)
A public interest s.32 deportation appeal, which followed the appellant’s earlier unsuccessful application in Draga v. the United Kingdom (app no. 33341/13). The appellant had amassed 8 serious convictions, totaling 13 offences and 4 cautions. The appeal was dismissed and protection status as a refugee has been revoked. George appeared for the Secretary of State.
• Hosanny v Secretary of State for the Home Department  FTT (EA/00791/2019)
A challenge against an IS.151A decision and notice of removal. The case concerned the definition of “new matters” (Quaidoo  UKUT 87) where the Appellant relied on a pure human rights case. George successfully appeared for the Appellant with the appeal being allowed on Chikwamba principles.
• Ravichandran (+3) v Entry Clearance Officer  FTT (HU/18931/2018)
A matter concerning the correct exemptions to be applied in disabled applicants taking the required English language test for entry clearance applications. George appeared successfully for the four appellants.
• VA and JA v Secretary of State for the Home Department  FTT (PA/10028/2018)
The Judge has commended George’s impact: “I was persuaded to adopt Mr Mavrantonis’s insightful views as my own” due to how “very cogently” submissions were made and to “endorse his relevant comments and critique”.
• AR v Secretary of State for the Home Department  FTT (PA/12232/2018)
LGBT asylum appeal where George appeared for the State. The Judge referred to George’s strengths in cross-examination: “The couple were subjected to detailed parallel questioning in cross-examination. The questions by Mr Mavrantonis were thorough and designed to test the veracity and substance of the couple’s claimed relationship”.
• Asima Ali and a child v Entry Clearance Officer  FTT (HU/14890/2017)
An entry clearance case where the genuineness of the sponsor’s employment in the United Kingdom was impugned. George proved his case and successfully appeared for both Appellants.
• Ritendra Chinari v Secretary of State for the Home Department  FTT (HU/11125/2017)
Paragraph 322(5) HMRC tax deception case where George successfully appeared for the State.
Public access qualified
Accredited civil and commercial mediator
Professional memberships & appointments:
The Honourable Society of Gray’s Inn
Institute of Advanced Legal Studies
2014 – University of Surrey, LLB Bachelor of Laws (Hons)
2015 – University College London, LLM Master of Laws
2016 – BPP University London, BPTC
‘‘Deport now, Appeal later?” (Counsel Magazine, January 2019, co-authored with Jonathan Trussler)
‘‘Can Kiarie and Byndloss threaten certification under section 94 of the Nationality, Immigration and Asylum Act 2002?” (Westlaw Thomson Reuters, August 2018)
‘‘Law and Practice following the Lord Falconer Bill: Should England and Wales reform the law on Assisted Suicide?” (Cambridge Law Review, October 2017)
‘‘Jury System in Modern Rational Law: Is the jury system an absurd institution whose only claim to legitimacy is its archaic root?’’ (Gray’s Inn Law Journal, July 2016)
In his free time, George is an amateur photographer and a keen philatelist. He was also a former sergeant in the Army for two years.