A poll of 2,000 adults found that one in four would opt for a latte as their drink of choice.
The cappuccino took second place.
The flat white is the preferred java for one in seven Brits, and one in five prefer an americano.
A mocha, espresso and a filter coffee also featured in the top 10.
Leanne Beswick from AO.com said: “We all love that first sip of coffee in the morning, which is why making proper coffee at home is more popular than ever.
“Not only does making coffee on your own machine save you money but technology now means that your home brewed cup can rival your local coffee shops.
"Plus, you don’t have to queue.”
But while coffee drinkers aged 45-54 are most likely to be partial to a latte, younger coffee lovers favour a cappuccino.
The research also found that the average adult has 10 cups of coffee a week at home with another three more bought from a cafe or coffee shop.
And 42% of Brits admit they haven’t truly woken up to the day ahead until they’ve had their first cup of coffee, which, on average is at 9.01am.
One in six think they are funnier and wittier when they are fuelled up on coffee, with 31% thinking they are able to work harder and 10% even described themselves as ‘coffee addicts’.
More than a third also admitted they wouldn’t trust someone else to make them a hot drink in case they don’t get it exactly how they like it.
It also emerged that two thirds of adults enjoyed the taste of coffee as well as its caffeine kick, with 43 per cent seeking out the aromatic flavour in coffee cake, and one in four love coffee ice cream.
36% of Brits polled have invested in a reusable cup, which they take on the go with them to cut down on waste and two in five say they mostly remember to bring their ‘keep cup’ along with them when they are on the move.
And 63% admitted that they worry about the impact disposable coffee cups are having on the environment.
39% cent also have their own coffee machine brewing away at home, and of those who don’t, a third have plans to own one in the future.
Most popular coffee types in the UK
1. Latte
2. Cappuccino
3. Flat white
4. Americano - white
5. Americano - black
6. Filter - white
7. Mocha
8. Espresso
9. Filter - black
10. Double Espresso