The Lleyn ewe is very adaptable and is suited to being crossed by most, if not all terminal sires. Crossing a Lleyn with a terminal sire will result in premium quality lambs and can compliment any terminal sire breed.
Suffolk x Lleyn
Hampshire Down x Lleyn
Texel x Lleyn
Beltex x Lleyn
Charollais x Lleyn
Here are some examples, this list is not exhaustive:
The Suffolk on the Lleyn ewe produces a fast growing lamb that has length and conformation. Can easily achieve 40kg live weight but can be taken to much heavier weights if desired.
The Charollais onto the Lleyn ewe produces a very tight skinned saleable prime lamb, good to fatten with good growth rates. They are also easy to lamb.
The Texel onto the Lleyn ewe produces a lamb with good conformation and shape. Texel lambs can be sold as light weight lambs or taken onto heavy lambs. They finish easily.
The Hampshire onto the Lleyn produces a good framed lamb that has very good growth rates.
Beltex x Lleyn
The Beltex is renowned for its carcase traits, when crossed with the Lleyn the ewe will milk the lambs well helping growth whilst the Beltex will help give confirmation and high killing out percentages.
Crossed rams produce some very saleable prime lambs that have excellent conformation and shape. Suitable for early or late lambing.
The Blue Texel onto a Lleyn ewe produces shapely white lambs with excellent conformation. Also easy lambing.
Again a popular cross for encouraging growth rates.
If you are wanting more prolificacy into your Cheviot flock then a Lleyn ram can inject this trait. Lleyn crossed onto a Cheviot will give you more lambs, good skins whilst still producing a white faced lamb. The lambs will get up on their feet quickly.
This cross produces a lamb that will have lambs that are soon on their feet suckling. They will have better skins and be hardier.
You should choose the sire that suits your system and provided for your needs. What may suit one producer may not suit another.