March 2020's must-sees

Extravagant, selfish and gluttonous, George IV may have been a pretty terrible king, but he was a major patron of the arts, and many of his acquisitions remain in the Royal Collection today. On the 200th anniversary of his accession, a new exhibition at the Queen's Gallery in Buckingham Palace offers the chance to see some of the treasures he amassed, which range from Rembrandts to bejewelled rings and French porcelain to satirical prints. The exhibition runs until 3 May.

In Noel Coward's classic comedy, Blithe Spirit, an eccentric spirit-medium accidentally conjures up Elvira, the first wife of novelist Charles Condomine, who goes on to try and wreck his second marriage - helped by the fact that he is the only person who can see her. In this new production at the Duke of York's Theatre by director Richard Eyre, Jennifer Saunders (of Absolutely Fabulous fame) plays the medium Madame Arcati, in a strictly limited six-week run that opens on 5 March.

Camellias are one of the earliest and most beautiful flowers of spring, and when they were first imported from China to Britain in the mid-18th century they were so rare that rich collectors spent enormous sums on glasshouses in which to display them. The grandest surviving example, created by the 6th Duke of Devonshire at Chiswick House in London, was superbly restored in 2010 and hosts an annual camellia festival; this year's show runs from 12 March to 5 April.