Can I rescue this lawn?

Moved into a new house and the grass was 3 feet high.

Have cut it all down by hand, and now left with brown patchy grass with raised clumps?!

Is there any way of making this look good again??

Or do I need to dig it all up and re-seed?
If so, how and when should I do that?

Im very new to all this, sorry

 

Welcome to the forum Umvert.
Yes, you can rescue that grass but you won't get it into Wimbledon overnight - but probably easier than digging up and reseeding.
Cut the grass regularly - that alone will make it look better.
Put an edge round the grass - quite easy by just going round with a sharp spade , plunging the edge in and clearing away the straggly stuff from the edges. The difference in appearance will give you the heart to carry on.
When the weather gets a bit better and the weeds in the grass are growing well treat the whole area with lawn weed and feed. Spray individual clumps of persistent weed with lawn weed killer.
As for the bumps - well over time edge round the bumps with your spade and lift the turfs out, level to match the surrounging grass, and put the turfs back.
Any hollows can be levelled up by putting some sand and compost mixture on top pf the grass which is there. The grass will grow up through it or you can sprinkle some grass seed on it.
Keep working away at it and by the end of summer you might be quite pleased with your lawn.

 

I go along with Alice, its amazing how much difference regular mowing has to coarse grass and weeds.

Weed and feed in a couple of months will make a big difference.

I've made a "lawn" out of worse than that in the past.

 

With the general condition of the site, especially the bare patches. I would say, weed killer it all, rotovate and reseed.:gnthb: You will save pounds by doing that.

 

rake up all the grass you've cut and start to row regularly, when weather permits, using a mower with a grassbox. Start a lawn maintenance programme. Couple of good books in the shops on lawns.

Start with mower at its highest setting and gradually reduce over 2 to 3 months