WR6002-1500 32cm 1500W Raker & Scarifier 230-240V Lawnmower £69.99 Delivered @ Screwfix

If you use a scarifier...you'll also have to 'invest' in grass seed. As you'll have plenty of bare patches (initially)

It's a rabbit hole though with lawns.. lots of variables e.g why do you have a moss problem, the type of grass , regular mowing (not just once in a while once it gets too long) to encourage grass to grow sideways not upwards etc etc

My cheats when I was a lawn nerd... Iron sulphate powder (easy to buy in bulk off eBay). It's water soluble so easy spread via watering can over the lawn..kills moss..but importantly makes grass that dark green colour that folks associate with a healthy lush lawn.

Had mine for about 3 years. Rented out to dozens of people. Still going strong!

I agree with wildflowers (in the border) encourage wildlife but wildflowers in grass I’d say are more for meadows / sides of paths walks etc. I think people that push for lawns to be wildflower seeded need to refocus there efforts and push to get fake plastic grass banned first and foremost! I see people vacuuming there front and back lawns especially bungalows! (Low Maintenance Obviously)