Need printing service for magazine UK

I need to get a quote for printing some magazines. Can you help me with that?
Dimensions: 19.5x27.5 (approximate, may vary in accordance with design)
Number of pages: 48 (approx)
Paper: 170gr glossy for inner pages, 350 gr for cover.
Binding: Thread sewn
Print run: 300 pieces (minimum)
Shipping: Standard DHL