XON v XOM

Facts

After their divorce, a husband (XON) and a wife (XOM), both acting in person, filed cross-appeals against a District Judge's decision on the ancillary matters. The husband brought District Court Appeal No 46 of 2025 and the wife District Court Appeal No 94 of 2025. The District Judge had given brief grounds on 18 February 2025 and supplementary grounds on 20 March 2025.

Before the appeals were heard, each side applied in the General Division of the High Court (Family Division) to put new evidence before the appellate court: the husband by Summons No 333 of 2025 and the wife by Summons No 347 of 2025. The husband wanted to show the maintenance he had actually paid, his current income, expenses and liabilities, a domestic helper's employment contract, and an email confirming that the eldest child had moved from an international school to a local primary school. The wife offered, among other things, a log of the husband's access visits, his rental contract, his tax and bank records, refunded one-way air tickets, her own rental contract, post-separation messages, updated medical records for two children, proof that her child from an earlier marriage had left a special needs school, and her tax assessments for 2016 to 2020. Tan Siong Thye SJ decided both summonses.

Issues

1. Whether evidence of events after the hearing below would have a perceptible impact on the appeals
2. Whether evidence of matters before the hearing below satisfied the special grounds in Ladd v Marshall
3. Whether new evidence aimed at changing child maintenance could be brought through the appeals at all

Holding

The court dismissed the husband's Summons No 333 of 2025 in its entirety and allowed the wife's Summons No 347 of 2025 in part, admitting only the husband's new address and rental expenditure, the wife's condominium rental contract, and the post-separation communications between the parties about the children. Each party was to bear its own costs.

Reasoning

The judge applied r 831(2) of the Family Justice Rules 2014. Post-hearing evidence is admitted only if it would have a perceptible impact on the decision, which under BNX v BOE [2018] 2 SLR 215, applied to family cases in TSF v TSE [2018] 2 SLR 833, means the matters arose after the hearing, are potentially material and appear credible. Pre-hearing evidence must meet the three Ladd v Marshall conditions.

Much of the material from both sides was really aimed at showing changed circumstances to alter child maintenance. The judge held that an appeal tests whether the District Judge erred on the material before her, and that changes in circumstances should be raised by applying to vary the order under s 118 of the Women's Charter 1961. As the parties did not agree to admit such evidence, the husband's payment records, income documents and school-transfer email, and the wife's tax and bank records of the husband, medical records and school-withdrawal letter, were refused.

The helper's contract and the wife's earlier tax assessments failed Ladd v Marshall because they could have been produced below; the wife conceded she had the statements before the hearing. Her self-made access log was uncorroborated and selective, and the air tickets, which she accepted did not pass the test, were immaterial.

By contrast, both rental contracts showed where the husband and the children now lived, which was potentially material to access and to the wife's challenge to joint custody, and their authenticity was not disputed. The parties' messages and emails from April 2025 onwards bore on their ability to co-operate under joint custody and appeared credible, so they were admitted too.

From the judgment