Use ANYONE except BT business. They are systemically incompetent, their support is non-existent. From wiping out everyone else's phone lines in our building for a week while installing a line for us, through to billing us £200 per month and not notifying us when a phone line used for our alarm system went out of contract, through having to raise complaints to the CEO's office and the ombudsman to get anything sorted, they truly are a company to avoid. Currently 1.5* on Trustpilot with 85% of customers rating them one star or less. https://uk.trustpilot.com/review/business.bt.com