delicious inexpensive coffee

"dears" ? Boy! have you got it wrong

I'd give up the coffee if I were you.

Bradfordlass English an additional language for Kseniya.
Greeting people with 'dear' is usual practice for many, in particular people from Eastern Europe.
Your reply is quite rude, to be perfectly frank.

"Kseniya*, in reply to your post, sorry I don't know much about London or coffee!
Hope that you enjoy your city walk today

That should read 'English isan additional language'.

I think you should try an independent coffee shop in your locality - you can usually see which are the popular ones.

Or make your own and take it with you in a travel mug.

I agree with Riverwalk.

If you use your own cup you can get 25p off the cost of your coffee at Costa, I’m not sure if Starbucks do the same (I’m not as keen on Starbucks coffee). Marks and Spencer also reduce the cost of your coffee if you take your own cup, and their coffee is really good.

Tube station pop ups are good for really strong coffee to fortify you for the day ahead. You don't necessarily have to go in to the platform, some are just outside

Oh, yes the pop-ups in their little French-looking vans are very popular.

Save your money by having coffee at home when you return.

I don´t understand this business of having to take coffee when you go for a walk. I personally would be needing to use the loo as soon as I drank it. If you must have coffee, then in this cold weather taking a flask would be the best solution.