The bottle, which will roll out in the on-the-go market from April, will appear across its no-sugar portfolio of Pepsi Max and Diet Pepsi.
The soft drinks giant, which uses Britvic to distribute its products in the UK, says that the 600ml bottle format is a first for the UK market and will also roll out across the Tango brand.
The bottles are already available in countries including Australia, India and Canada.
Pepsi is aiming to encourage consumers to move away from its sugar variant in the UK and the 600ml bottles will be the same price as a 500ml bottle of regular Pepsi.
Since 2004 the UK business has spent no money on advertising full-sugar Pepsi in the UK. During the same period it says it has invested over £20m in marketing Pepsi Max and Diet Pepsi.
The launch of its new 600ml format will be supported by a £5m marketing campaign from April. The activity will comprise TV, outdoor and digital advertising, alongside POS, price-marked packs, cash and carry promotions and three million money-off coupons.
Garrett Quigley, CEO of Pepsi UK, said: "With this launch, we are reshaping the cola category. By offering better value on Pepsi Max and Diet Pepsi, we are shifting consumer preference and making it easier to switch from regular soft drinks to our no-sugar colas."
He said: "This latest initiative is a nudge in the right direction for our consumers. We want to use our influence in the marketplace to encourage consumers to go for no-sugar options, as part of a healthier lifestyle."
Last year Pepsi's cola range grew at higher rate than Coca-Cola's. In the 12 months to October 2009 Pepsi saw a 6% increase in sales, taking them to £267m. It is however some way behind Coca-Cola in the category, which achieved £999.4m in sales, with a 3.2% increase, according to Nielsen.
Last month PepsiCo UK & Ireland appointed Amanda Thomson to the role of UK marketing director, to replace Bruno Gruwez.
Pepsi is currently rolling out its new logo in the UK, following the fresh identity being unveiled in the US in October 2008 as part of a £700m global brand makeover. The logos portray a series of "smiles" on packaging across its portfolio.
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