But other Leech paintings strongly remind me of those by his Scottish contemporary Jack Vettriano (1951 - ) ... Wikipedia entry here.
What we have are steamy (to varying degrees) scenes featuring beautiful, often not fully-clothed women and men usually wearing suspenders (braces, in the UK) and often with hats. I don't know enough about Leech to say if he is following Vettriano's lead or got there first.
As for style, Vettriano paints in a slightly flat, simplified, almost-poster style whereas Leech is more "painterly," where brushstrokes are featured. Below are a few Vettiano examples followed by some of Leech's work.