Hello Annie,
I have not been able to find any data regarding the weights of the Bailey, so I cant tell you if its within the capacity of teh Peugeot,
But the Peugeot web site only lists a the 2011 508SW and not an estate, so I,m guessing this is your particular model
It has the following specification
Gross Vehicle Weight 2280Kg
Kerb weight 1780
Gross Train weight 3880
Maximum braked trailer weight 1900
and maximum hitch load 75Kg
These are healthy figures and it will tow any trailer up to 1900Kg as per is manufactures specifications
However, A word of caution, If the driver passed their test afters Jan 1997, and they haven't taken the B+E extension test, then because of their licence only alows a combined Maximum Authorised Mass 3500kg, the largest trailer that can be towed is 3500 - 2880 = 1220Kg MTPLM