Some very recent Baen books are at good prices on UK Kindle
Castaway Odyssey by Eric Flint and Ryk E. Spoor for £4.49 {Baen $9.99}
https://www.amazon.co.uk/gp/product/B01LYH4VBQ/
https://www.amazon.com/gp/product/B01LYH4VBQ/
1636: The Chronicles of Dr. Gribbleflotz (Ring of Fire Book 20)
by Kerryn Offord & Rick Boatright for £4.48 {Baen $8.99}
https://www.amazon.co.uk/gp/product/B01II4MSZE/
https://www.amazon.com/gp/product/B01II4MSZE/
Also
Project Elfhome 6 Sep 2016 by Wen Spencer £4.69 {Baen $9.99}
https://www.amazon.co.uk/Project-Elf...dp/B01K5FICTA/
Given the exchange rate these are wonderful but I can't see a reduction in NA.
There is also the latest in the new Valdamar series, UK only edition from Titian Books for £2.84 earlier books being £3.79 or more
Closer to the Chest (The Herald Spy Book) 14 Oct 2016 by Mercedes Lackey
https://www.amazon.co.uk/Closer-Ches...dp/B01L9ZS4T8/