Snap, Pret A Manger, Diageo: Everything that matters this morning

Snap shares tumble 20% after disappointing growth
Shares in Snap, the parent company of Snapchat, fell 20% after disappointing growth in the first three months of 2017.
The first results posted since Snap’s IPO in March – the biggest in the US since 2014 – saw the company’s net loss reach $2.2bn (£1.7bn), due largely to costs associated with the IPO. Snap’s adjusted loss of $188.2m (£145.3m) was $10m (£7.7m) higher than expected.
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