The British Red Cross has tweeted pictures of the vehicles it is using to help tackle the flooding that has devastated Somerset.
The amphibians - which work on land or water - are being used to transport relief supplies to the Somerset Levels.
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In her message Theresa May praised the "inspirational bravery" and "unbreakable spirit" of Mancunians in the wake of the blast.
ITV News has obtained exclusive footage of the moment armed police raided a house believed to be linked to the Manchester suicide bomber.
The Manchester Evening News set up a JustGiving page asking people to support the families of those affected by the suicide bombing.