Top of his year in Land Law, he subsequently obtained a BCL and returned to Worcester College Oxford as a visiting tutor in constitutional law.

He is recommended in The Legal 500, Chambers & Partners and Legal Experts as a leading junior.  He receives recommendations in the fields of property litigation, partnership law and commercial litigation:

"Admired for his 'deft touch in court' and the 'utter charm he displays to clients and judges alike'." (Chambers & Partners 2011)

"A formidable, focused and expert adviser and representative in partnership disputes. He has a razor-sharp intellect, and brings both barrels of his partnership law expertise and commercial sense to bear on the disputes in which he is involved'. (Legal 500 2010)

"Celebrated for his first-class advocacy and advice" (Chambers & Partners 2010)

"Pragmatic and well-prepared". "Bright and personable", "easy to get on with, and very thorough" (Legal 500 2009).

"A 'really promising star.' Regarded by commentators as 'absolutely first-class,' he is commended for being 'very good with difficult clients, and an excellent cross-examiner in court.' " (Chambers & Partners 2009).

He receives "glowing feedback from peers." 'The quality of Jonathan's advice is a reflection of his outstanding intellect, coupled with high levels of legal acumen and procedural knowledge'. (Legal 500 2008).

 "Intelligent, and courteous, the well-regarded junior 'has a first-class mind, and is shrewd and careful. He doesn't rush to judgment, but weighs matters carefully. He defends his opinions skilfully and with panache' and'rolls up his sleeves' and works with clients 'with sensitivity and care'" (Legal 500 2007).

He has a varied chancery and commercial practice with particular experience in property and partnership litigation. Company law (including breach of fiduciary duty claims and shareholder disputes) is a further area in which he specialises.

He is a member of the Chancery Bar Association, Property Bar Association and Association of Partnership Practitioners. 

He is a former Chairman of the Young Bar and has served two terms as an elected member of the Bar Council sitting on various committees including the Professional Complaints and Conduct Committee, Professional Standards Committee and General Management Committee. 

He was an Eastham and Hardwick Scholar of Lincoln's Inn and the holder of an Inns of Court Studentship.

Jonathan’s reported cases include the following:

• Clarence House v Nat West Bank [2010] 2 All ER 201 (virtual assignments);
• Manning v English [2010] EWHC 153 (Ch), [2010] Bus LR D89 (2010) (partnership)
• Re Claygreen Limited [2006] BCLC 715 (company law: pre-emption rights);
• Harris v Wallis [2006] All ER (D) 158 (security for costs);
• Baker v Potter [2004] All ER (D) 174 (company law: shareholders' dispute);
• Howard de Walden Estates Ltd v London RAC [2003] All ER (D) 73 (landlord and tenant);
• Wolters v London RAC [2003] All ER (D) 240 (landlord and tenant);
• West Hampstead Management Co Ltd v Pearl Property Ltd [2002] 3 EGLR 55 (leasehold enfranchisement);
• Yeoman's Row Limited v London RAC [2002] All ER (D) 148 (landlord and tenant);
• R v Secretary of State for Environment, Transport and the Regions ex parte Spath Holme Ltd [2001] 2 AC 349
 (public law/landlord and tenant);
• South v Trustees of the Phillimore Kensington Estate [2001] All ER (D) 166 (leasehold enfranchisement);
• Loder-Dyer v Cadogan [2001] 3 EGLR 149 (leasehold enfranchisement);
• Spath Holme v North Western RAC [2001] 3 EGLR 30 (landlord and tenant);
• R v South Bank University ex p Coggeran [2000] ICR 1342 (public law/discrimination);
• Curtis v London RAC [1999] QB 92 (landlord and tenant);
• Globe Equities v Globe Legal Services [1999] BLR 232 (costs orders against third parties);
• Spath Holme v Greater Manchester & Lancashire RAC (No 2) [1999] 1 WLR 1623 (costs);
• Re Queensway Housing Association [1999] 31 HLR 252 (landlord and tenant);
• Northumberland and Durham Property Trust Company Ltd v London RAC (No 4) [1999] 31 HLR 252 (landlord and tenant);
• Northumberland and Durham Property Trust Company Ltd v London RAC (No 3) [1998] 2 EGLR 99 (landlord and tenant);
• Northumberland and Durham Ltd v London RAC (No 2) [1998] 3 EGLR 85 (landlord and tenant);
• Knowles v Fire Brigades Union [1997] ICR 595 (trade union law).