Given the kooky title of a new painting show at De La Warr Pavilion, it seems necessary to point out, yet again, that painting isn’t dead. The line is from poet A.E Housman, who wrote a versified dialogue between a dead man and his living friend. So while certain painters may be dead, contemporaries can talk to them. And that’s what 21 painters line up to do in this new, undogmatic survey on the South Coast. Rest assured, the conversation is breezy.

A chronological hang of its permanent collection instead of the once so modish thematic one, a show devoted entirely to contemporary painting, which was not at all modish until quite recently – things are definitely astir at Tate Britain.

In The Importance of Being Earnest, first performed in 1895, Oscar Wilde wittily quipped that Algernon must choose between “this world, the next and Australia”. At a time when it took weeks to reach the other side of the globe most Britons, if they thought of it at all, thought of that far-flung continent as a convenient corral for undesirable fellow citizens. Baron Field, the first Justice of the Supreme Court of New South Wales, wondered whether Australia was, in fact, an aberration, calling it a “barren wood” and an “after-birth”. In 1906 an English geologist, J.W.

Sixty years of hard work, encapsulated in 90 drawings and a handful of thickly encrusted paintings, by the distinguished, obsessive, single-minded octagenerian artist Leon Kossoff (b 1926) vividly set out a passionate attachment to a simultaneously immutable and ever changing London. An East Ender, Kossoff has had several subjects: he has painted people, and has continually drawn after the Old Masters, first visiting the National Gallery as a schoolchild. His drawings after Poussin were exhibited at the National Gallery.

With their curious juxtapositions and scrambling of pictorial space a dream-like atmosphere is conjured in Mamma Andersson’s paintings. Her scenes are often confined to the domestic or everyday realm, but, even when peopled, suggest something closer to still life than real life. Or perhaps stilled-life. The Swedish painter (Mamma is a nickname), now in her 50s, received welcome exposure in the UK with her Camden Arts Centre retrospective in 2007. This latest exhibition is, I believe, amongst her strongest work yet.

All roads start from Rome, and so it proves in this challenging exhibition put together from the holdings of the Royal Academy’s art collection, archives and library. It features 17^th-century Italian paintings – some of the grandest by the French artists who settled in Rome, and took inspiration from the surrounding campagna – brought back to Britain by the Grand Tourists who, in the midst of their various adventures, amassed substantial art for their stately homes.

Sensing economic opportunity, the Dutch artist Peter Lely (1618-1680) emigrated in his early twenties to London, and was thus the right man in the right place. After the early death of Sir Anthony van Dyck, followed by the Englishman William Dobson, Lely cleverly and charmingly utilised disarming ambition to open up a career for himself and become in due course the most successful painter of his time.

For all that’s been said about Orson Welles – usually focusing on his towering genius and sizable ego - he was above all a great contrarian. In interviews he was often genial and self-effacing and of course a scintillating raconteur. During his later years he could be avuncular, entertainingly unpredictable and very funny, like a mischievous lecturer. His The Lady From Shanghai (1947) is so loaded with eccentricity it’s positively cock-eyed and Welles was of course an outcast in Hollywood, that is until he cast himself out.

The Queen is the first mass-media monarch, and still probably the most ubiquitously depicted person in history. Her 60 years on the throne is only exceeded by Victoria, and her reign has coincided, of course, with photography, film and television. The profusion of royal imagery is exaggerated and exacerbated by the cult of celebrity and the new technology of the internet and social networking. This has led to an overwhelming sense that the public has the right to know the most intimate details of the lives of public figures.

Prunella Clough, 1919–1999, was one of the most idiosyncratic and original British artists of the postwar period. Her art is reticent, shy, subtle - yet in both life and aesthetics she was a free and generous spirit. Now there is a fine selection of works large and small, but all domestic in size, on view in the West End, marking the publication of a magisterial new biography by Frances Spalding.