I need a list of 100 digital marketing agencies in the UK

Hello PPH'ers,

I want to market my business to digital marketing agencies across the UK, so require a list of businesses so I can email them. I am starting at 100 for now and seeing how long that takes you (and me!) and what I get back from the exercise. If successful, then there would be the chance of repeat work going forward.

I just need their website address and contact email in an excel spreadsheet.

Thanks, Janette