There are quite some flow recessions underway in this dry spell - the river Kent in Cumbria here going from exceptionally high to exceptionally low in just over 3 weeks. Check out more on the current situation on the @UK_CEH UK Water Resources Portal:
https://www.ceh.ac.uk/news-and-media/news/track-latest-hydrological-situation-across-uk-our-new-portal

From elsewhere in the northwest (Eden catchment) this plot shows decline of both soil moisture and river flows.....

Different story here in the Thames valley where soil moisture also shows steep declines but river flows in some Chalk catchments (like the Pang here) remain notably high, sustained by the exceptional winter rainfall.