E-mail address database building from 300 existing links

We run a website that features 300 places to go in London, and we want to e-mail all the places that we currently feature on our website. To do this we'd like to pull together a database of all the the e-mail addresses of all the places, so the task would be to follow the 300 or so links currently on the site and find out the e-mail addresses of the venues, then put them in one clear Excel spreadsheet.