Trim back 3 large trees

I need some routine tidying of my back garden.Can you help.

I need a back garden tidied and maintained. Can you help.

Lawn mowing general tidy and waste disposal

Had area of garden cleared now need some type of retaining wall put in , area around shed needs a step . Two raised garden beds cleared now have excess soil and looking for some one with ideas also want to have some mature trees .

Planting 3meters medium trees in garden.