Manchester Art Gallery
I would recommend a visit to the Art Gallery in Manchester. What made an impression on me was their choice of painting from the Pre-Raphaelite period from the mid 1800. The movement was a reaction against art using the Greek mythology and they wanted to show life as it was as well as using many biblical motives and themes from literature.
The art gallery is completely free as many other museums in England seem to be.
All photos are mine from the visit in June 2015