Sandwiches for 57p are on offer from a self-serve automat in Soho on 17 and 18 June 2026, when Heinz Mayo opens its AutoMayoMat at 15 Bateman Street to coincide with National Picnic Week.
More than 800 sandwiches, made with Sandwich Sandwich, will be available across the two days from individual self-serve compartments and paid for by contactless. Each order comes with an engraved lunchbox, tote bag and bottle of Heinz Seriously Good Mayo.
Two sandwiches on the menu
Sandwich Sandwich has created two options. The Heinz Mayo Chicken Kyiv combines crispy fried chicken and savoury bacon with chopped parsley soft cheese, garlic Parmesan Heinz Mayo, caramelised red onion chutney, cucumber, lettuce and onion. The vegetarian Egg & Heinz Mayo pairs crushed free-range egg mayonnaise with cucumber, vine tomato and rocket.
Why an automat
Heinz describes the AutoMayoMat as the UK’s only sandwich automat. The format takes its reference from automated food-service concepts historically used in Europe, reworked for a British sandwich menu, and was developed in response to the popularity of sandwiches and changing lunch-break habits. Heinz cites research suggesting that more than half of British consumers do not properly take a lunch break, although it did not supply the source.
The AutoMayoMat is open from 12pm to 4pm on both days at 15 Bateman Street, Soho, London W1D 4AQ, and Heinz says further UK appearances will follow.
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