17th & 18th Century Burney Collection Newspapers contains the digitized materials (not just newspapers) collected by the Reverend Charles Burney (1757-1817) and held in the British Library. A useful source for find information about the United Kingdom and the wider world in the seventeenth and eighteenth centuries.The database's advanced search offers searching publications by title, place, language, section, and date. The Publications Search link includes searching by format, including (among others) books, broadsides, forms, newspapers, and pamphlets.
Irish Newspaper Archive contains full-text searchable digitized Irish newspapers, with issues spanning the 1700s to current day, as well as the Radical & Political Newspapers collection with publications related to the political unrest in Ireland in the late 19th and early 20th centuries. Newspapers with both local and national scope and circulation are included and new titles and issues added regularly.
These are not as graphically rich and/or do they go back as far as the four titles on the right. But depending on the dates they offer more choices for contnent. Pay close attention to the dates of coverage, some of which are moving targets. Do not forget that major news events in the United Kingdom are also likely to be covered in newspapers around the world, so almosty all the newspaper datanbases could be useful.