There are many fine exhibitions to see in London at the moment, all have been covered in detail here on the Bloghorn. Here’s a round-up in “last chance to see” order.

Barry Fantoni – Public Eye, Private Eye, above, cartoons and paintings, at the Thomas Williams Fine Art Gallery, Old Bond Street. Open 10am – 6pm, Monday to Friday. Until May 22

Posy Simmonds’ original artwork from the 1970s to the 1990s at the new offices of Guardian News and Media, Kings Place, 90 York Way. Open daily from 10am – 6 pm, admission free. Until June 4

The Definitive Thelwell at the Chris Beetles Gallery, 8 and 10 Ryder Street, St James’s. Monday to Saturday, 10am – 5.30pm. Until June 6

Yankee Doodles! Barack Obama in Cartoons, above (cartoon by Christian Adams), at the Political Cartoon Gallery, 32 Store Street. Open Monday to Friday 9.30am – 5.30pm and on Saturdays between 11.30am – 5.30pm. Until June 13

Maggie! Maggie! Maggie! – Margaret Thatcher, Mother of the Nation or Monster from the Blue Lagoon at the Cartoon Museum, 35 Little Russell Street, Bloomsbury. Open Tuesday-Saturday 10.30am to 5.30pm and Sundays 12pm to 5.30pm. Until July 26