For the super thrifty, of course, there is the option of bringing in a good old fashioned mug and a cafetière.
Claer Barrett is the editor of FT Money; ; Twitter: @Claerb.
To get your caffeine (regular or decaf) fix in the capital, discover the best aafes promo code june 2015 coffee shops in London below.Sign In, sip a cup of magic, caramel Brulée, Peppermint and Toasted White Chocolate seasonal flavors are here.Paul also has a loyalty card (.So which is the best buy and what kind of return on investment could coffee lovers potentially obtain?The Starbucks basic reusable cup costs 1 and it looks.Better, then, to invest in a cup with a stoppable, leakproof lid thats robust enough to survive the rigours of commuting and being repeatedly stuffed into a handbag.Only available in the US, it is controlled via a smartphone app and can be customised with a 24 carat gold halo lid and a recharging coaster.A solution for a problem that few of us experience, you would have to be seriously wired to think that buying one of these was a good idea.From Instagrammable flat whites to the wave of artisan coffee pop-ups, London has enjoyed something of a love affair with real, good coffee in the past few years.
Ecoffee, are another option at around.
The cheapo Starbucks cup will pay for itself after four discounted coffees in the chain, or two in rivals Pret and PatVal.
Costa, Starbucks and Paul, the French sandwich chain, all offer a discount of 25p.
If you sink 10 into a sturdier reusable cup, it will take 20 coffees to pay back (assuming the 50p discount).The dedicated coffee enthusiast could substantially boost their investment returns by playing coffee arbitrage.How many coffees it will take to earn back the value of your investment also depends on the type of cup you choose.KeepCup (bright mix and match colours, cork thermal bands and choice of a glass costway com discount code or plastic cup) ranging from 10.For the hipster in your life, theres the.How is this possible?So, as well as being better for the planet, using a reusable cup could also be better for your bank account.Contigo (between 20 and 30 depending on size and colour) are guaranteed leak-free, and will also keep your coffee warm for hours.But your future investment returns also depend on its lifespan.Some of my contacts on social media complained that the cups cracked easily.But heavier, non collapsible cups with intricate locking systems such as the.However, Pret and Patisserie Valerie offer the most generous discount of 50p per hot drink to those who bring their own cups (Pret will soon start selling its own ).Anxious to boost their green credentials, most of the big coffee chains offer discounts of up to 50p per hot drink to encourage consumers to bring their own reusable vessels.Then replace the thermal lid, walk back to your work kitchenette, and top up with free boiled water and milk there.

La Carte Noire ) with a free coffee and croissant when you sign up, then your tenth coffee free.
If you drink five coffees a week or 260 cups a year after youve paid for the reusable cup, you could save a cool 120.
But you are still spending rather a lot of money on coffee.