Peugeot 207 1.4 - Head gasket repair under manufacturer warranty - torretel1947

The head gasket on my 2010Peugeot 207 1.4 was repaired under manufacturer warranty.

The failure caused oil to leak into the cooling system. Now there is oil in the coolant and the reservoir is black and stained.

Should the cooling system have been flushed and the reservoir cleaned/changed.?

Should the cambelt have been renewed?

Peugeot 207 1.4 - Head gasket repair under manufacturer warranty - thunderbird

Yes the cooling system should have been flushed but the cam belt will only need changing when its duee on time or distance.