No idea but Roald Dahl was extremely dodgy.

You aren't going to believe it but he was employed by MI6 to be a honeypot spy in Washington DC. Always DC. He had affairs with the rich wives of wealthy Americans. He abused his disabled wife.

"BFG" definitely had clear pedo references and even in the cartoon version had phallic symbols hidden in the artwork. He wasn't a nice person and was extremely selfish, whether he was a pedo I don't know. But again we have these strands

DC

Deep state / secret societies

High society decadence

Pedo nudge nudge references

Grown men obsessed with children

Stories around children's homes, orphans, strange adults eccentric adults taking them "under their wing" away from family or institutions that are charged with their care

Foul language and uncomfortably adult themes

Roald Dahl, Satanism and MI6 http://aangirfan.blogspot.com/2009/11/roald-dahl-satanism-and-mi6.html?m=1

Roald Dahls strange MI6 affairs http://www.telegraph.co.uk/news/newstopics/howaboutthat/2655185/Roald-Dahls-seductive-work-as-a-British-spy.html

Creep pedo references in Disneys "The BFG" http://m.youtube.com/watch?v=gNaEYfxEMT0

The unpleasantness of Dahl http://thisrecording.com/today/2011/6/1/in-which-we-consider-the-macabre-unpleasantness-of-roald-dah.html

If this doesn't depress you enough and ruin your childhood memories, you could always google "Lewis Carrol paedophile pedophile" - Alice in Wonderland