I forgot I had these in my newspaper cut-outs collection from two and a half decades ago. The one above is of course by the legendary Gerald Scarfe (published in the Radio Times) who is still working today, producing ever more striking and funny caricatures of politicians! Here is a link for his official website with dozens of amazing cartoons and books by the artist: http://www.geraldscarfe.com/
The second one, from the Guardian, is not portraying the real funeral of Lady Thatcher that we've just had even though many of the characters in this drawing were at present (John Major, Norman Lamont, Michael Heseltine etc)! It's referring to the events after she was forced to stand down as a Prime Minister. Steve Bell's very funny cartoon website is at: http://www.belltoons.co.uk/
The last one is by Chris Riddell, another veteran British illustrator and political cartoonist (published in The Independent). Thatcher along with the other two major political leaders of the eighties, all retired and reminiscing. Chris Riddell's official website, featuring a wealth of illustrations from his long career is: http://www.chrisriddell.co.uk/