Caffeinated Coffee Beans, UK Roasted | Raw Bean
Caffeinated coffee beans are whole roasted beans with their caffeine intact, for anyone with a grinder, espresso machine or bean-to-cup. Raw Bean sells single origins and blends in 227g, 1kg and 2.5kg, roasted in the UK, several of them Great Taste Award winners. Free UK delivery over £25.
If you've got a bean-to-cup machine or a grinder, this is your page. Everything here is caffeinated, nothing decaf, in three sizes: 227g to try something new, 1kg for the daily drinker, and 2.5kg if your machine barely gets a rest.
How much caffeine is in coffee beans?
Roughly speaking, a single espresso has about 60 to 70mg of caffeine and a normal mug of brewed coffee lands around 90 to 120mg. The caffeine comes from the bean itself, not the roast, so a darker roast isn't automatically stronger. Light and dark roasts have very similar caffeine once you weigh them out the same. Strength of flavour and strength of caffeine are two different things.
Which size suits you?
227g is about a fortnight of coffee if you have a cup or two a day. It's the low-risk way to try a single origin like our Mega Mexican before buying bigger.
1kg is where most bean-to-cup owners settle. Better value per cup, and you're not reordering every week. Our blends sit between roughly £20 and £27 a kilo.
2.5kg is for households that drink a lot, or a small office. The Waitrose 'Unpacked' beans come in this size.
Which beans work in a bean-to-cup or espresso machine?
All of them. Every bean on this page suits an espresso machine or a bean-to-cup. The blends lean darker and sweeter, which is what most people want from an espresso, a flat white or a latte. The single origins are here if you like to taste where the coffee actually comes from. New to it? Start with a blend; they're more forgiving of a slightly off grind or dose.
Getting the most out of them
Grind just before you brew if you can; beans go stale far slower than ground coffee. For espresso, aim for a fine grind and adjust until the shot runs in roughly 25 to 30 seconds. For a cafetière, go coarse, use about one heaped tablespoon per cup, and give it four minutes before you press. Small changes to the grind make a bigger difference than most people expect.
A note on UK water
Most of the UK has hard water, and it changes how coffee tastes. If yours is hard, a simple filter jug before you brew gets you a cleaner, sweeter cup from the same beans. It's the cheapest upgrade going.
How to store coffee beans
Airtight container, out of the light, at room temperature. Don't freeze beans you've opened; the condensation does more harm than the cold helps. Buy a size you'll get through within three to four weeks of opening and they'll taste their best the whole way.
Common questions
Which caffeinated bean is best for a bean-to-cup machine? A medium-to-dark blend is the safe bet. It's forgiving and tastes good as a flat white or americano. Our 1kg blends are made for this. If you'd rather have a single origin, start with the Mega Mexican.
Are dark roast beans stronger in caffeine? No. Caffeine survives roasting, so a dark roast and a light roast weigh out to roughly the same. Dark roasts taste bolder, which is a flavour thing, not a caffeine thing.
Can I use these beans for espresso? Yes, every bean here suits espresso and bean-to-cup. The darker blends pull a sweeter, classic shot; the single origins come through brighter.
How should I store coffee beans? Airtight, out of direct light, at room temperature. Use within three to four weeks of opening, and skip the freezer once the bag is open.
Do you deliver free? UK delivery is free on orders over £25.
Prefer ready-ground? See our caffeinated ground coffee.
Written by Alex Cox, founder of Raw Bean, who selects every Raw Bean roast profile. Last updated 21 June 2026. Delivery info.