Already a Landlord but now starting Self-Employment

I'm already registered for Self Assessment and have been completing the Property Income section of my return for many years as I am a landlord, but I have now been offered some consultancy work that I want to do on a Self-Employed basis. Do I need to inform HMRC of this, or can I just select and complete the relevant Self-Employment pages in my next return? Thanks

Hi Port End,
You will need to register to pay Class 2 National Insurance.
You will still use the same UTR to show the self employment and the rental income.
Thank you.