This section creates a new criminal offence and provides the potential for increased sentencing (compared to certain existing immigration offences under section 24 of the Immigration Act 1971) where a person does an act which endangers the life or lives of others during a sea crossing from France, Belgium or the Netherlands to the United Kingdom and which results in the commission of an existing offence under section 24(A1), (B1), (D1) or (E1) of the Immigration Act 1971.
	Subsection (2) sets out the conditions under which this offence is committed and defines key expressions by inserting subsections (E1A) and (E1B) into section 24 of the Immigration Act 1971. Subsection (E1A) specifies that to commit the offence, a person must: 1) make a journey by water from France, Belgium or the Netherlands which results in their entry or arrival into the United Kingdom; 2) that journey results in the commission of an offence under subsection (A1), (B1), (D1) or (E1) of section 24 of the Immigration Act 1971; and 3) that at any point during the "relevant period" of the journey, the person acted in a way that caused or created a risk of serious personal injury or death to another person.
	Subsection (2) also defines key expressions for the purposes of section 21 by inserting subsection (E1B). Subsection (E1B)(a) defines "personal injury" as meaning physical or psychological injury. Subsection E1B(b) sets out that the "relevant period" of the journey begins when the person committing the offence first left dry land in France, Belgium or the Netherlands for the purpose of making the journey. This includes the process of boarding the first, if more than one, vessel. The "relevant period" ends when the person reaches dry land in the United Kingdom. Subsection (E1B)(c) explains that land is to be regarded as "dry land" at any particular time if it is not covered by water at that time.
	Subsection (3) sets out the maximum sentence for the offence by inserting sub-paragraphs (iii) and (iv) into subsection (F1(d). For an offence committed in connection with an offence under subsection (A1) of section 24 of the Immigration Act 1971, the maximum sentence is six years or a fine or both. For an offence committed in connection with an offence under subsections (B1), (D1) or (E1) of section 24 of the Immigration Act 1971, the maximum sentence is five years or a fine or both.
	Subsections (4), (5) and (6) make amendments to subsections (3), (4) and (5) of section 24 of the Immigration Act 1971 to include references to subsection (E1A) of section 21, as inserted by subsection (2).
	Subsection (7) inserts a new subsection (6) into section 24 of the Immigration Act 2024 which explains that subsection (E1A) as inserted by subsection (2), refers to acts carried out inside or outside the United Kingdom.
	Subsection (8) inserts a new subsection (7) into section 24 of the Immigration Act 2024 and states that where a person is on trial charged with an offence under section 21 and is found not guilty by the relevant court, sheriff or jury of the section 21 offence, the person may still be found guilty of an offence under subsection section 24(A1), (B1), (D1) or (E1) of section 24 of the Immigration Act 1971, as applicable.
	Subsection (9) makes consequential amendments to the Immigration Act 1971.
	Subsection (10) makes consequential amendments to the Nationality, Immigration and Asylum Act 2002.
Part 1: Border Security Endangering another during sea crossing to United Kingdom Section 21: Endangering another during sea crossing to United Kingdom