Corporal William Savage, Fusilier Samuel Flint and Private Robert Hetherington have been repatriated back to the UK from Afghanistan.
The soliders were travelling in a Mastiff armoured vehicle when it hit a roadside bomb on a routine patrol in Nahr-e Saraj, Helmand Province.
The family of Robert Hetherington have requested that the media do not show images of the soldier's coffin.
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Patches of fog and frost will clear to leave a mostly dry day across the British Isles on Monday, with sunny spells.
Drivers are being advised to use alternative routes or wait until 8pm before setting off to avoid the worst queues.
Researchers at King’s College London say it is the “first step” in identifying those who could be at risk of contracting the condition.