Combine lamb sirloin fillet and ingredients for the meat marinade in a large mixing bowl. Rub the sauce and garlic into the lamb.
Let the lamb marinade in the sauces and herbs for at least 1 hour. For best flavours leave the the lamb in the marinade over night.
Pre-heat the air fryer with a temperature of 180 degrees Celsius (356 degrees Fahrenheit) for 2 minutes.
Spray some oil in the Air Fryer basket. Alternatively, you can use Air Fryer parchment paper.
Pull the air fryer basket out after the pre-heating is completed. Make sure to use tongs, as the air fryer basket is hot after the pre-heating, and place the lamb fillet in the middle of the air fryer basket. Drizzle some of the remaining marinade over the lamb fillet so that it just covers the surface. Ensure that the lamb fillet is not drenched in sauce because the sauce can burn in the air fryer.
Set the air fryer at 180 degrees Celsius (356 degrees Fahrenheit) for 10 minutes. Then place the basket back into the air fryer for cooking.
In the meantime, in a small bowl mix the honey with the water.
When the timer has reached 10 minutes pull the air fryer basket out and coat the lamb fillet with honey water.
Place the lamb back into the air fryer and set the temperature at 180 degrees Celsius (356 degrees Fahrenheit) for 5 minutes.
Pull out the air fryer basket when the air fryer has finished cooking and let it rest for 3 minutes.
Take the lamb out with tongs and slice in 1 centimeter slices and serve with your favourite salads or vegetables. Refer to serving suggestions above for ideas.