IMHO there's nothing better than the leather for kids! The only
trouble is that the child seats WILL put divots in the leather.
Unfortunately there is no safe way of preventing this as the base of
the child seat needs to be in direct contact with the seat. In an
accident the seat drives down and uses friction from the seat squab to
reduce impact forces. I have to take my car seat out every day but my
back seats are perfect after 2 years abuse from a (now) over 2 year
old.

Hi Steve,

I've got a GTV and a Pajero, both with Leather seats. I bought two seat
protectors from Halfords. They are specifically for placing under child
seats. (They go behind and under the child seat) They are non slip and
actually improve the fit of the car seat as you have probably found out they
can often slip around on leather. They cost about ?10 each and have stopped
me getting those horrible divots on the back seats.. If you need more info I
can get the name off them when I get in. I only got one of them last week so
your local Halfords should have one.

Regards,
Steve