Son Sam, says to thank you all very much for your recommendations. He's got them all for future reference. He's gone with Karsa's suggestion of A Fire Upon the Deep by Vernor Vinge, has read three chapters and says it's exactly what he was looking for. He meant to add that he would like a degree of fantasy and alien races in the story and this book fits the bill beautifully!
Game
(@OlderFish pfffft ....you're just a young whippersnapper! No more than in your 40's. We were listening to those too, but grown up by then. Hubby was a fan of Blondie, think he still is, I'm sure there's a 45 of hers floating round somewhere.)
Is it the consequences of anesthesia that's caused you to forget to use a word from the previous post in your following question?
(sorry OF, couldn't resist )