You’re still legally obliged to give them your address under s3 and they tenant may also request the address under separate legislation and you are obliged to give it within 28 days.
To be honest, its practically impossible to stop them finding out these days. They can spend £3 to find it at the Land Registry and if you’ve registered with the ICO, (which all landlords are supposed to do), they publish the register online. Likewise, the Council publish a register of all landlord licence holders online.