Judicial College Guidelines (18th Edition): More Than Just Inflation
May 5, 2026
By Jack Scott
The 18th edition of the Judicial College Guidelines (hereafter “JCG”) is used to determine general damages in personal injury has just been published.
It has arrived with little fanfare and, at first blush, appears to do little more than track inflation. That impression is misleading.
As a minimum, every new edition updates the brackets for general damages to account for the inflation that has occurred since the last edition was published. Across the industry, this inflation increase has the effect of sharpening almost every Claimant Part 36 offer and weakening almost every Defendant Part 36 offer.
But beneath that routine RPI uplift sit several developments of genuine significance, including a wholesale restructuring of epilepsy claims, the introduction of miscarriage as a distinct category of injury, and an acknowledgment of unresolved issues in the operation of the whiplash tariff regime itself.
This article identifies the key changes and considers their implications for practitioners advising on quantum in personal injury litigation.
Structural Continuity
In broad terms, the striking feature of the 18th edition is its continuity. The chapter structure remains unchanged, the descriptive frameworks are largely identical; many passages are reproduced verbatim. So the 18th edition remains a distillation of decided cases; it is evolutionary, rather than revolutionary.
The Headline: RPI-driven uplifts
The brackets in the 18th edition have been increased by reference to the Retail Prices Index (RPI), now taken at 407.7 (August 2025), compared with 376.6 (August 2023) in the previous edition. The result is an uplift of approximately 8%.
Across most categories, the increases are predictable and uniform. For example:
- Tetraplegia: was £396,140 – £493,000 → now £428,850 – £533,720
- Death (full awareness): was £15,300 – £29,060 → now £16,570 – £31,460
For day-to-day practice, this confirms that the JCG continue to function as a calibrated reflection of awards already being made, rather than a driver of change.
The most significant change: Epilepsy restructured
The most striking substantive development is found in Chapter 3.
The 17th edition distinguished between “grand mal” epilepsy and “petit mal” epilepsy. The 18th edition abandons those terms entirely, reflecting modern clinical practice. They are replaced with “generalised motor (tonic-clonic) seizures” and “focal seizures”.
The previous categories have been merged into a single, wide bracket.
The new bracket (£72,440 – £198,320) spans what were previously distinct categories. The editors expressly acknowledge that it is “very wide” and may require refinement in future.
This change has two immediate consequences:
- Greater forensic flexibility
Practitioners are no longer constrained by artificial distinctions rooted in outdated terminology. - Greater uncertainty
With a broader bracket, more emphasis will fall on control by medication, loss of consciousness and impact on work and social functioning
In short, epilepsy claims are likely to become even more fact-sensitive and more heavily contested within the bracket.
Miscarriage – a New Category
The 18th edition introduces a new section on miscarriage (Chapter 6). This is a notable development. Historically, such claims have been addressed indirectly through psychiatric injury or obstetric injury categories, which plainly missed the unique impact of this injury.
The creation of a discrete category reflects increased judicial recognition of the distinct nature of the loss, the likely occurrence of both physical injury and psychiatric harm and the emergence of a sufficient body of decisions to justify formal, structured guidance.
For clinical negligence practitioners in particular, this is likely to become a frequently cited section.
Further Evolution of Damages in Sexual and Physical Abuse
The category addressing sexual and / or physical abuse, introduced in the 17th edition, has been updated to reflect recent decisions. While there is no radical structural change, the direction of travel is clear:
- Increasing recognition of emotional injury as part of general damages
- Continued incorporation of image-based abuse
- A tendency toward higher awards within existing brackets
This perhaps reflects a broader shift in judicial attitudes to these claims – which seem to be attracting greater judicial discretion, rather than a formal recalibration of the brackets themselves.
Brain Injury: A Shift in Medical Language
The changes to the brain injury chapter are more subtle but still important. The 17th edition referred to “Post-Concussional Syndrome (PCS)”. The 18th edition reframes this as “neurocognitive disorder due to traumatic brain injury” and describes PCS as a “legacy term”. The emphasis is now explicitly on symptoms rather than diagnostic labels.
This aligns with modern medico-legal practice and reinforces the need to focus on functional impact rather than terminology.
An very clear and useful guide to this complicated area of medicine can be found in the recent book ‘A Practical Guide to Catastrophic Brain Injury Claims’ by my colleague at Exchange Chambers, Pankaj Madan, and is available here.
Exacerbation and the Tariff Regime
One further development appears not within the main body of the Guidelines, but in the introductory material to the 18th edition. It is easy to overlook, but it is important.
The editors address the unresolved question of how courts should assess general damages where an injury constitutes an acceleration or exacerbation of a pre-existing condition, particularly where the duration of symptoms is less than two years and the claim might therefore otherwise fall within the whiplash tariff regime.
The position is described in strikingly candid terms: it is “unclear” how such cases are to be treated. The editors identify what appears to be the only judicial decision on the point, J v Ageas Insurance Ltd (District Judge Wilson, September 2024), reported in Kemp & Kemp. In that case, it was held that an exacerbation or acceleration of a pre-existing lower back condition fell outside the tariff regime.
It seems this applies whether the pre-existing condition was known / active or latent / dormant.
This is a notable inclusion for smaller claims. The Guidelines have traditionally confined themselves to distilling clearly established authority and quantum report. Here, however, the editors highlight a live and underdeveloped issue, and draw attention to a first-instance decision of potentially wide practical application.
For practitioners, the implications are obvious. Claims involving the worsening of pre-existing conditions are commonplace. The question of whether such claims fall within or outside the tariff regime may have a dramatic impact on quantum – a 17 month tariff injury may attract around £3,000, but the bracket for a JCG back injury of 17 months is £5,750 to £10,420. (The narrative for Chapter 7(B)(c)(ii) states: “This bracket will also apply to very short-term acceleration and / or exacerbation injuries, usually between one and two years.”)
The 18th edition does not resolve the issue, but it clearly signals that the answer remains open and that there is at least some judicial support for employing the more claimant-friendly JCG approach.
This is likely to be unwelcome and surprising news to many Defendants – especially where they are in receipt of Part 36 offers made by the Claimant.
The Unresolved Issue: RPI vs CPI
As in previous editions, the editors maintain the use of RPI, while acknowledging arguments in favour of CPI or CPIH. The 18th edition goes slightly further by noting the Government’s intention to replace RPI by the end of the decade. However, the position remains that any change must be driven by the courts.
This leaves open a potentially significant future battleground. For now, practitioners should continue to work within an RPI-based framework. RPI is almost always around 1% higher than CPI.
Five Practical Implications for PI Solicitors
- Do not treat the 18th edition as a simple uplift exercise
The brackets have increased, but there are areas (notably epilepsy) where the analytical approach has changed and require fresh consideration. - Epilepsy claims now require closer factual analysis
The removal of “grand mal” and “petit mal” categories and the introduction of a single wide bracket means greater emphasis on control by medication, frequency and type of seizures and impact on employment and daily functioning. - Remember the new miscarriage category
This is likely to become a key reference point in clinical negligence claims and should be considered alongside, rather than subsumed within, psychiatric injury. - Do not rely on diagnostic labels in brain injury claims
The shift in language reinforces that awards will turn on the functional impact of an injury, not whether a condition is labelled as PCS or otherwise. - Exacerbation of pre-existing conditions is likely to fall outside the tariff regime
The 18th edition highlights that the position remains unclear, but notes first-instance authority suggesting such claims are not subject to the whiplash tariff. This may have a significant effect on valuation and should be actively considered in appropriate cases.
Conclusion
For practitioners advising on quantum, these changes reinforce a familiar lesson: the JCG provide the starting point, but careful analysis of the facts of the individual case will always remain paramount.
