As a company we have used the services of Alliance for 5 years.  In all that time we have not have any problems or worries.  The staff are excellent and very professional – nothing is too much trouble for them.  If problems arise, they deal with them professionally and quickly, always keeping you informed of what is happening.  From booking cars right through to returning them they are there to help.  I most certainly will not use a different company and I cannot recommend them highly enough.