I always assume that if they don't say, it's not fan bake. I always look in new recipe books to see what they say and I don't think I've come across one yet that has fan bake as standard. For example, Nigella's books are all non fan bake:
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www.nigella.com]
When I was shopping for a new oven, to my surprise I found they're still selling some without a fan option, so non fan bake as standard would make sense.