This past winter has been tough on our lawn. We had a lot of wet snow
and freezing rain which has made my back garden look like a pigs
paradise. Because half of the snow is yet to melt we still have some
standing water.

Is there anything I can do now to try and speed up the recovery of my
lawn?

50/75% of the grass is brown or dead. The rest is bald mud patches.

Any hints or tips would be great.

Thanks.