Well, they did intend to drop the concrete block on his car, the block wasn't dropped by accident or through their gross negligence (in which case it would be manslaughter).
Murder does require intent, but it does not necessarily require an intent to kill that person; if you intend to "just" assault a person but they die, that's murder; if you intend to kill someone but kill someone else whom you did not intend to kill, that's murder.
"extreme indifference to human life" (again, intentional) is generally considered murder - e.g. if you'd intentionally burn down your neighbour's house without knowing or caring if anyone's inside, then if someone dies, it's considered murder. And UK, where the incident happened, has the concept of felony-murder where any death (even if accidental) that happens in the process of felony can be considered murder, because the felony that endangered people's lives was intentional.
> Subject to three exceptions (see Voluntary Manslaughter below) the crime of murder is committed, where a person:
> Of sound mind and discretion (i.e. sane);
> unlawfully kills (i.e. not self-defence or other justified killing);
> any reasonable creature (human being);
> in being (born alive and breathing through its own lungs - Rance v Mid-Downs Health Authority (1991) 1 All ER 801 and AG Ref No 3 of 1994 (1997) 3 All ER 936;
> under the Queen's Peace (not in war-time);
> with intent to kill or cause grievous bodily harm (GBH).
> Well, they did intend to drop the concrete block on his car, the block wasn't dropped by accident or through their gross negligence (in which case it would be manslaughter).
Murder does require intent, but it does not necessarily require an intent to kill that person; if you intend to "just" assault a person but they die, that's murder; if you intend to kill someone but kill someone else whom you did not intend to kill, that's murder.
"extreme indifference to human life" (again, intentional) is generally considered murder - e.g. if you'd intentionally burn down your neighbour's house without knowing or caring if anyone's inside, then if someone dies, it's considered murder. And UK, where the incident happened, has the concept of felony-murder where any death (even if accidental) that happens in the process of felony can be considered murder, because the felony that endangered people's lives was intentional.