The Ballad of the Sad Café: Wunderkind; The Jockey; Madame Zilensky and the Ki by Carson McCullers

This is a strange collection of 7 short, in some cases, almost minimalistic tales.I enjoyed them, especially the first one!
They are linked by isolation and the loneliness juxtaposed to selfless love in implausible triangular relationships. 
I love the way Carson McCullers paints a specific scenery in one's imagination while flawlessly dropping the characters there.

The Mistletoe Murder and Other Stories by P. D. James

Christmas Days: 12 Stories and 12 Feasts for 12 Days by Jeanette Winterson

While the Light Lasts (Hercule Poirot Series Book 41) Agatha Christie

 

These previously unpublished short stories showcase Christie's talents across a range of styles from romance to the supernatural.

After Dark by Wilkie Collins

    

This is a collection ofsix short stories mystery, suspense and romance revolving around a portrait artist who must temporarily stop his work to rest his damaged eyes.
 I like the descriptions of atmosphere and personality.
But I didn't find all six of the short stories equally compelling and some of them were rather slow

 

Christmas at Thompson Hall: And Other Christmas Stories (Penguin Christmas Classics) by Anthony Trollope

Insightful and humorous depictions of the middle class and gentry of Victorian England at Christmas time.
Easy to read love stories

The Assassination of Margaret Thatcher by Hilary Mantel

   

This is a collection of short stories; some of which are better than others!

Good points:
Mantel uses vivid descriptions and amazing characterisations.
They are darkly humorous, although some are uncomfortable,. 

Bad points:
Often the endings are way too sudden and unsatisfying. 
I preferred her longer stories.

Christmas at Cold Comfort Farm by Stella Gibbons

 

A collection of light short stories, although in some, notably 'Sisters', there's some very sharp social comment.

The short stories contained within the book are beautifully written, but much more of their own time.

There is only one about Cold Comfort Farm - the rest are about  are about ordinary people living ordinary lives reflecting 1930's sexual morals. There is a story where a spinster takes in a single mother and eventually confesses to having had unwedded cough with a man herself.

The Listener by Tove Jansson

 

I love Tove Jansson - a collection of odd short stories where not much happens but that contain beautiful descriptions that make me want to move to Scandinavia.