Police are looking to identify the two men in this CCTV footage, who were filmed taking four rolls of artificial turf from outside a nursery in East Grinstead.
They arrived at Tiny Tigers day nursery in London Road in a van at around 4.26pm on April 18th, then came back around 45 minutes later to take the turf, worth around £7,500.
The registration plate of the van they arrived in is believed to begin with YP70 or FP70.
Anybody who recognises the two men or their vehicle, or saw anything suspicious around that time, is asked to contact police online or via 101, quoting serial 541 of 19/04.