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Ah possibly, I just had a look on their website and there was no Belgian date so put 2 and 2 together, which usually results in me getting 367 with festivals these days haha.    I need an announcement of sorts soon haha. After a year off with doing some other things in life, I've got my UK festivals sorted for next year (Tramlines/Kendal), my rock fest (RfP) so I want a 'big' festival in the diary for my big year. It's between Werchter, Pinkpop and potentially Hurricane at this point; Pinkpop played their hand now, just need an announcement from the other two within the next week or so so I can get locked in before the travel costs and such like price me out 

it was amazing. we went to london a few months later and wanted to see them again but it was 60 pound for tickets so we passed it.

On the whole you're right, but I don't think Dizzee Rascal has been booked since his DV conviction.   Slowthai was also quietly dropped from the lineup one year.

I’m pretty sure they’re ruled out due to being at another festival 

Aged 16 having a dad who can get people i assume free tickets for the 1975 must be worth a few social points!!   Re your last paragraph, they come and go all the time. I wouldn't be remotely surprised if they did it as a full one one-off.