IHTM30114 | The settlor: death charge on lifetime transfers chargeable when made
From HM Revenue & Customs · Inheritance Tax Manual
Under IHTA84/S201 (2), where the transfer is not a potentially exempt transfer (IHTM04057) the settlor is not liable under IHTA84/S201 (1)(d) for any extra tax payable because the transferor (i.e. the beneficiary in possession immediately before the transfer) dies within seven years.