Have a look at the following suppliers.
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They have a 5 star rating in the Salehoo directory and stock a good selection of brand name handbags. Here is a quote off their site 'We're the UK's largest importers of 100% genuine designer sunglasses and accessories.'
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They have a 4 star rating in Salehoo and carry handbags and accessories from top designers. Quote from their 'About Us' page, 'Our merchandise: It is all authentic! We guarantee that!'
I hope this helps and all the best for your business.
:)