Posted: 03/04/2017 at 18:11
If you had a mini digger in, there is a chance that it sliced through the roots perhaps ? I assume the tree itself is still stable.
It's a little difficult to tell from the pic whether some of the foliage is dead on some of the trunks. Certainly some of the top growth looks healthy enough.
After pruning, they would normally regenerate from the base but if you want to keep the height now rather than wait a few years, it's a slightly different matter.
Again, it is a little difficult to tell but the base is presumably constricted by the road/pavement and the grass is pretty well surrounding the rest of it. The tree to the left ? Possibly shading that side.
You probably need to step back and have a good look and decide how many trunks you can reasonably keep. Cut out those you can afford to lose, clear the grass from around the base, make sure the surrounding soil is decent ( not sure whether the rubble/stones have come out of the nearby ground or the results of your recent work ? ). Apply a general fertiliser and keep your fingers crossed.
The high hedge and the ivy growing up the trunk will simply have forced the tree to reach for the light. Removing dead fronds won't have harmed it.
I hope you manage to deal with it - be a shame to lose it
Maybe another poster will have more advice ?