Adventures In Modern Marriage - Facts

 The novel takes place in 2015 during the British election of that year. 

The 2015 United Kingdom general election was held on Thursday 7 May 2015 to elect 650 Members of Parliament (or MPs) to the House of Commons. Opinion polls and political commentators had predicted that the results of the election would cause a second consecutive hung parliament whose composition would be similar to the previous Parliament, which was in effect from the previous national election in 2010. Opinion polls turned out to have underestimated the Conservatives, however, as they won 330 of the 650 seats.

Lewes is the town the characters mention often. Lewes is the county town of East Sussex.

Harry likes walking in the Downs. The South Downs are a range of chalk hills in the south-eastern coastal counties of England that extends for about 260 sq mi across the south-eastern coastal counties of England from the Itchen valley of Hampshire in the west to Beachy Head, in the Eastbourne Downland Estate, East Sussex, in the east.