We previously printed everything with URBAN (urban_design@zen.co.uk), but have been placing flyers with Solopress more recently as it’s much cheaper.
Weights: 350 gsm for flyers and 250 gsm for Solopress A3 posters (with silk finish) is consistent across all our print materials. A1 posters would only have gloss option usually.
Advised quantities would be around 1,250 flyers per week of a run in-house and to cover distribution team routes that might be run. 20/30 A3 posters would be enough for shorter/longer runs. Full runs should have 4 A1 posters for building - short runs could have just 3 ordered.