Lead Generation Required

I need 20 leads. UK (preferably Essex) of companies who are interested in a new, high quality website. Please note these must be warm leads (people interested), not cold mailing lists. Looking for long term ongoing leads on a weekly basis. I'm happy to work with people outside the uk, but the leads must be inside the UK. I have already hired people to do this & need more. Would like skilled people to work with ongoing. Thank you.