Factual and Procedural Background
These were two appeals concerning court-ordered child-maintenance “top-up” payments. The Appellant father had children with Respondent A and Appellant B. Each child’s carer had obtained a consent top-up order under Schedule 1 to the Children Act 1989. [1][2]
The Child Maintenance Service initially assessed the father at the statutory maximum, but later superseded the assessment to nil with effect from 24 September 2021. The assessment was subsequently revised following investigation and appeals to the First-tier Tribunal, which found that the father’s income had remained above the statutory maximum and remitted the matter for recalculation. [3][4][5][6][7]
Judge Hecht refused to dismiss Respondent A’s enforcement application and held that her top-up order remained enforceable. In the other case, Judge Hudd dismissed Appellant B’s enforcement application, holding that the relevant order had ceased to have effect. The Court of Appeal transferred and heard both appeals together because they raised the same statutory-interpretation issue. [1][2][8][9]
Legal Issues Presented
- Whether a review, revision, supersession or appeal concerning a Child Maintenance Service calculation constitutes a fresh maintenance calculation under the Child Support Act 1991. [10][11]
- Whether such a fresh calculation causes an existing section 8(6) top-up order to cease to have effect under section 10 of the Act and regulation 3 of the Child Support (Maintenance Arrangements and Jurisdiction) Regulations 1992. [10][11][12][13]
- Whether the two top-up orders remained enforceable despite the later nil assessment and subsequent recalculation. [13]
Arguments of the Parties
Appellant Father's Arguments
- The definition of “calculation decision” in regulation 3 of the 2012 Regulations treats decisions under sections 11, 16 and 17 as separate categories, supporting the conclusion that a supersession is a distinct and fresh maintenance calculation. [14][15]
- Paragraph 15 of Schedule 1 supports the existence of multiple maintenance calculations. [16][17]
- Each review, revision or supersession should cause a top-up order to cease to have effect, even if the underlying decision was later found to be wrong and replaced. [13]
- The statutory scheme gives the Secretary of State discretion not to make a fresh decision where that would be appropriate having regard to the child’s welfare. [18][19]
- Interpreting the scheme in this way preserves the statutory separation between the Child Maintenance Service and the courts. [20]
Respondents' Arguments
- The references to sections 11, 16 and 17 in the definition of “calculation decision” distinguish an original maintenance calculation from later decisions that revise or supersede it, indicating one continuing calculation. [14][15]
- Review, revision and supersession amend the figure payable under a single enduring maintenance calculation rather than create new calculations. [21][22]
- The statutory scheme’s reference to a court order “ceasing to have effect” does not confer on an administrative computerised process the power to discharge a court order. [23][24]
- Interpreting every review, revision or supersession as a fresh calculation would produce impractical and absurd consequences, including the automatic yearly loss of top-up orders. [25][26][27]
Table of Precedents Cited
| Precedent | Rule or Principle Cited For | Application by the Court |
|---|
| Dickson v Rennie [2014] EWHC 4306 (Fam), [2015] 2 FLR 978 | A section 8(6) top-up requires a Secretary of State determination that the non-resident parent’s income exceeds the statutory threshold. | The case confirmed that this determination is not for the court. [28] |
| R v Secretary of State for Social Security, ex parte Biggin [1995] 1 FLR 851 | The welfare-of-children provision does not influence the quantification of liability. | The Court used the observation to reject an expansive view of ministerial discretion. [29][30] |
| Wood v Secretary of State for Work and Pensions [2003] EWCA Civ 53 | Whether supersession alters or replaces an earlier decision. | The Court found the decision inconclusive and noted that the relevant observations were obiter. [31][32] |
| TW v TM (Minors) (Child Maintenance: Jurisdiction and Departure from Formula) [2015] EWHC 2054 (Fam), [2016] 2 FLR 1386 | Observations concerning variation of a section 8(5) consent order. | The Court gave the observations no assistance because the case was not a top-up case and section 8(6) was not in issue. [33][34] |
| H v I [2024] EWHC 3512 (Fam) | A tentative view that annual reviews do not constitute a maintenance calculation. | The Court noted that the view was expressed without full argument and did not determine the issue. [35][36][37] |
| R (PACCAR Inc) v Competition Appeal Tribunal [2023] UKSC 28 | Statutory interpretation requires attention to statutory wording, context and purpose, and generally avoids absurd results. | The Court applied these principles to reject an interpretation producing unworkable and disproportionate consequences. [38][39][40][41] |
| Rossendale Borough Council v Hurstwood Properties (A) Ltd [2021] UKSC 16, [2022] AC 690 | The importance of identifying legislative purpose in statutory interpretation. | The principle supported reading the Child Support Act in light of its policy and structure. [42] |
| Deposit Protection Board v Dalia [1994] 2 AC 367 | Contemporaneous subordinate legislation may assist statutory interpretation. | The principle was cited as part of the general interpretive framework. [43] |
| Darwall v Dartmoor National Park Authority [2025] UKSC 20 | Statutory words must be interpreted in context and in light of the provision’s purpose. | The Court used this approach in construing the Child Support Act as a whole. [44][45][46] |
| R (N3) v Secretary of State for the Home Department [2025] UKSC 6, [2025] 2 WLR 386 | Application of ordinary principles of statutory interpretation, including context and purpose. | The principle was adopted in the Court’s interpretation of the statutory scheme. [47] |
| Black-Clawson International Ltd v Papierwerke Waldhof-Aschaffenburg AG [1975] AC 591 | The court seeks the meaning of the words Parliament used. | The principle supported a contextual reading of the statutory language. [48][46] |
| R v Secretary of State for the Environment, Transport and the Regions, Ex p Spath Holme Ltd [2001] 2 AC 349 | Statutory interpretation identifies the meaning words bear in their particular context. | The principle was cited in support of the Court’s contextual approach. [42][46] |
| R v McCool [2018] UKSC 23, [2018] 1 WLR 2431 | A statute should not be interpreted to produce an absurd result unless clearly required by the statutory words. | The Court relied on the principle in rejecting the consequences of treating every later decision as a fresh calculation. [39][40] |
| CG Fry & Son Ltd v Secretary of State for Housing, Communities and Local Government [2025] UKSC 35 | There is no dichotomy between ordinary meaning and purposive interpretation. | The principle reinforced the Court’s combined textual and purposive analysis. [41] |
| R (Project for the Registration of Children as British Citizens) v Secretary of State for the Home Department [2022] UKSC 3, [2023] AC 255 | A statutory phrase must be read in the context of the section, related provisions and the statute as a whole. | The Court applied this contextual approach to the Child Support Act. [41] |
Court's Reasoning and Analysis
The Court treated the issue as one of statutory interpretation. Section 11 creates the maintenance calculation, while sections 16 and 17 provide mechanisms for revising or superseding the decision underlying that calculation. The statutory language distinguishes a maintenance calculation from later “decisions”. [49][50][14][22]
The Court considered the structure of the statutory scheme, including the prescribed formula, annual reviews, revisions and supersessions. It concluded that these processes alter the amount payable under one continuing calculation rather than create a fresh calculation each time. [51][52][53][54]
Paragraph 16 of Schedule 1 specifies when a maintenance calculation ceases to have effect, including death, the absence of a qualifying child, or the parent ceasing to be a parent of the relevant child. It does not state that the calculation ends whenever there is a review, revision or supersession. [55][56][57]
The Court rejected reliance on paragraph 15 of Schedule 1, explaining that it concerns different amounts for different periods and does not demonstrate that ordinary revisions or supersessions are fresh calculations. [16][22]
The Court then considered section 8(6). A top-up order supplements the maximum statutory maintenance calculation and may be made only where a calculation is in force, the parent’s income exceeds the statutory threshold, and the circumstances make the order appropriate. [58][59][28]
The Court considered the practical consequences of the competing interpretations. Treating every annual review or supersession as a fresh calculation would repeatedly terminate top-up orders, require recurring applications, and create substantial expense, uncertainty and inconsistent outcomes. The Court regarded that result as contrary to the purpose of the statutory scheme and effectively absurd. [25][26][60][61][62][63]
The Court also held that only a court has power to discharge a court order. The phrase “cease to have effect” in section 10 and regulation 3 should not be treated as equivalent to judicial discharge by an administrative or computerised process. [23][24][64][65]
Accordingly, the later nil assessment and subsequent recalculation did not constitute a fresh maintenance calculation that terminated the top-up orders. The error in the assessment could instead be addressed by the family courts through enforcement, arrears calculations and, where appropriate, variation of the order. [66][67]
Holding and Implications
Appeal allowed in Appellant B’s case; appeal dismissed in the father’s case. The Court held that the Child Support Act 1991 establishes one continuing maintenance calculation, which may be altered by review, revision or supersession but is not thereby replaced by a fresh calculation. The top-up orders therefore remained enforceable. [68][63][69]
The cases were to be remitted to the Central Family Court for directions and allocation hearings if the parties could not reach agreement. [69]
The decision directly preserved the parties’ ability to pursue enforcement of the relevant arrears and clarified the statutory treatment of top-up orders. The Court resolved the specific statutory issue; the opinion does not state that a broader new precedent beyond that interpretation was created.