What is the letter 'P' that flashes up on the screen during Love Island?

Love Island viewers say Chloe 'instigated' row by telling Faye she didn't vote for her

Love Island viewers rush to Ofcom over Faye's rows again – after she racks up 25,000 complaints

Love Island's Zara Holland wows in a plunging gold satin mini dress as she steps out in Mayfair