This is a bit hard to understand but I would water well, it has been a dry spring and pruning back will be beneficial (reduce by one third).

I can't understand you clearly either, Ahb123.

I think you might need to give it a feed as perhaps the soil is impoverished - what type of preparation did you do before the plants were placed in their holes ?

Did you make sure the holes were twice the size of the rootball ?
Did you add organic matter into the hole before you planted or as backfilling ?
Are the plants in full sun and not enough water being given ?
Also, what size are these plants - are they mature/established specimens because if so they'd definately need reducing in height at planting time.
If they're normal 2-3 litre pot size, from a garden centre, not as much.

Knowing which of the several plants called Laurel these are would be helpful.
More in general, newly planted shrubs will need regular watering for their first summer. Exactly how often depends on the temperature and humidity: here in the desert, we water every day for the first few weeks. In the UK, every 3-7 days is more likely, from what I've heard. Rain probably doesn't count directly, unless it is very heavy, but the increase in humidity will increase the time until the next irrigation is necessary. Eventually, the roots of the "Laurels" grow deep and wide enough to support the bushes on normal rainfall alone.
Problems to check for:
Bushes may be planted too deep. The topmost roots should be just below the surface of the soil. A 3-6 inches of coarse mulch can be on top of the soil, as long as it doesn't touch the main stem(s).
Big lumps or layers of compost underground. Large quantities of pure organic matter underground can use up the oxygen, and start producing methane and hydrogen sulfide--very bad for roots.
Poor drainage. If it's in the low part of the garden, and there is a layer of clay underground, the water table may be too close to the surface, literally drowning roots, or encouraging water mold fungi, which none of the "Laurels" have much resistance to.
I hope some of this is helpful, Ahb!