RM3716 | Reviewing the claim form: minor's income from any other source
From HM Revenue & Customs · Repayment Claims Manual
A minor may get income from a source different from those covered at RM3692 - RM3712. Usually this happens because the assets or money are given or transferred
direct to the minor
or
to other people, often the minor’s parents, to hold until the minor is old enough to handle it.
Whenever a minor receives income from a source not covered at- obtain full details. See RM3720 - tell the donor’s GCD See RM3724 - decide whether to refer to HMRC Trusts Head Office Edinburgh. See RM3728