They both look like UK Dwarf Lops to me, although they could possible be cross breeds. Dwarf Lops tend to be more longer & slimmer in the face than a UK Mini Lop (Holland Lop) which have a shorter flatter face. Dwarf Lops will normally grow to about 4-5lbs whilst Mini Lops are only around 3lbs. If you look at the bunnies in my signature Maggie, George and Harry are all Dwarf Lops where as Hershel is a Mini Lop and you can see the difference in the faces.
The one on the left, the ears have only half lopped so are cutely referred as a helicopter bunny and is a broken sooty fawn colour, the same as my George. Whilst the one of the right has fully lopped and is a harlequin colour.
As TheTigerThief says rabbits can be quite hard to guess their age, but they both look quite young. I would probably guess no older than 6 months from the photos.
Both are gorgeous bunnies though, I hope you enjoy your new bunnies and please stick around on the forum.