Brittax baby-safe sleeper in Christchurch, Gloucestershire for sale

My son was born 3 months premature and one of the staff at the neonatal ward suggested a lay down car seat as it is safer as we were told " a newborn baby in a car seat gets rolled up like a little hedgehog which can effect their breathing ". Therefore we bought this and it was great. It also became very handy if we went out visiting people as when he fell asleep the sleeper was just like a little portable cot. It attaches onto a britax pram ( not too sure which makes or models ) but I have also included the attachment converts onto a silver cross frame. It also comes with the infant nest shown in separate photo Everything is in excellent condition, washed and ready to go. Some additional info BABY-SAFE SLEEPER GROUP 0 (Birth - 6 months | Birth - 10 kg) PRODUCT HIGHLIGHTS Optimum position – complete lay-flat system in car or on stroller Protective cocoon – roll cage and anticlockwise rotations Safety from every angle – energy absorbing interior Flexible comfort – adjustable backrest when on stroller Travel system ready – CLICK & GO® compatible Easy release – single-handed release from strollers PRODUCT FEATURES IMPACT PROTECTION Roll cage and anti-clockwise rotation Energy absorbing interior for 360° body protection HARNESS 3-point harness SEAT Full lay-flat system in car or on stroller Adjustable backrest for use on pushchair TRAVEL SYSTEM CLICK & GO® compatible One-handed release