Garden Services.....I think

Hi all,

We have moved into our new home, but a portion of the back garden needs a lot of work:

- Tank removal

- Area to be made level/cleaned for instant lawn (Possible need to remove some soil)

- Tons of old leaves to be removed

- Some concrete slabs to be broken-up and removed.

Who would I need to get in to do it? Most gardening services I found only does mowing and trimming.