Chambers & Partners 2007/8 recommends Jonathan as a Leading Junior in Clinical Negligence, he is said to be "easy to deal with”. Jonathan is also recommended in Product Liability, he is acknowledged for his “good intellect and substantial experience of product liabilty cases”.

The Legal 500 2007/8 recommends Jonathan as a Leading Junior in Product Liability, he “is considered to be a top-quality junior”. Jonathan is also recommended as a Leading Junior in Clinical Negligence and Healthcare.