Here is a list of all Prime Ministers, but I am unable to think of one that was arrested;
Walpole, Wilmington, Pelham, Newcastle, Devonshire, Newcastle, Bute, G Grenville, Rockingham, Chatham, Grafton, North, Rockingham, Shelburne, Portland, Pitt the Younger, Addington, Pitt the Younger, W Grenville, Portland, Perceval, Liverpool, Canning, Goderich, Wellington, Grey, Melbourne, Peel, Melbourne, Peel, Russell, Derby, Aberdeen, Palmerston, Derby, Palmerston, Russell, Derby, Disraeli, Gladstone, Disraeli, Gladstone, Salisbury, Gladstone, Salisbury, Gladstone, Rosebery, Salisbury, Balfour, Campbell-Bannerman, Asquith, Lloyd George, Bonar Law, Baldwin, MacDonald, Baldwin, MacDonald, Baldwin, Chamberlain, Churchill, Attlee, Churchill, Eden, Macmillan, Douglas-Home, Wilson, Heath, Wilson, Callaghan, Thatcher, Major and, of course, Blair.
I do not understand why Mr Aitken is singled out for derogatory mention. He was not a Prime Minister but was, and still is, a decent man.