The food firm's latest project is an app based delivery service called 'Tesco Now', which allows shoppers to order their groceries - from a choice of 1,000 products - and have them delivered to their door within the hour.
But, there are a few catches.
Firstly, delivery will cost £7.99 a pop - or £5.99 if you can afford to wait two hours.
It's also only available in central London - and you can only order a maximum of 20 products at a time, which isn't ideal if you've a family or need to put in a large last minute order. On the plus side, there's no minimum order.
The range includes fresh fruit and vegetables, meat, bakery and dairy, as well as pet, baby, health and beauty products - but not F&F fashion or electricals.
Customers can place and track their orders via the Tesco Now app - the groceries will then be picked in a local store and delivered via moped by third party fulfillment specialist, Quiqup, who have partnered with Tesco.
Adrian Letts, online managing director at Tesco, said: "From forgotten essentials to that crucial final ingredient, Tesco Now can get them to our customers' door within the hour.
"Shoppers' needs are changing and we want to offer a range of services that allow them to shop with us in a way that suits their needs. We look forward to hearing what they think of the new service."
The supermarket chain is the only firm to date to rival AmazonFresh, which launched back in 2016 as London's first ever one-hour food delivery service.
In partnership with Morrisons, the online retail giant delivers from door to door within 60 minutes for Prime members in London and Hertfordshire - at a cost of £79 a year.
Hugh Fletcher of retail consultancy Salmon said: "As shoppers increasingly consider the speed of delivery rather than the brand they're ordering as the most important part of a purchase, it's no wonder Tesco has tried to combat Amazon's spreading tentacles in the UK with its 'Tesco Now' service.
"It's completely app-based and cleverly reflects the ongoing trend towards consumer shopping digitally on-the-go. The move is clearly designed to counter Amazon's Prime Now service, who, as well as buying Whole Foods earlier this month, has threatened to seriously dent the popularity of the big grocery stores in the country," Fletcher added.
"Retailers should take a leaf out of the Tesco's book here; with customers becoming more loyal to a service than a brand – and convenience playing a huge part in how we, as consumers, shop – retailers can't afford to remain paralysed.
"If you can match Amazon's quality and delivery service, you are certainly one step further up the ladder than most."
Tesco Now is available to customers in central London between 8am until 11pm on weekdays and 9am until 11pm at weekends.
The full list of postcodes covered are as follows: E1, E2, EC1, EC2, EC3, N1, N16, NW1, NW10, NW3, NW5, NW6, NW8, SE1, SE11, SW10, SW11, SW12, SW13, SW14, SW15, SW1, SW3, SW4, SW5, SW6, SW7, SW8, W1, W10, W11, W12, W14, W2, W7, W8, W9, WC1, WC2.