I've had two experiences with lost property, one very positive, the other less so.
First time was unfortunately timed, and I'm blaming jet-lag. I'd got back from Canada the night before, and was still staggering around in a confused state not knowing what time zone i was in. Bottom line was that on a journey from Oxford to Kew Gardens (changing Reading into the
SWT▸ service) I managed to leave my weekend bag containing clothes, toiletries and most importantly at the time contact lens case and cleaner on the
FGW▸ service that continued to Paddington. Unfortunate timing why...? Because it was the day after the failed bombing attempts in July 2005. Reached down to get something out of my bag on the SWT service and it slowly dawned on me that I had lost my bag...had a word with the SWT guard who was kind enough to pass a message to someone's control somewhere about what I'd done, then arrived in Kew, checked in with the relations and got straight back on the underground* to Paddington where by a small miracle I found my bag sitting next to the lost property desk waiting for me to claim it.
SEcond occasion was less good - I left a coat on an
XC▸ service to Paignton when I alighted at Taunton. Called lost property later in the day, they said they'd investigate and call me back. Still waiting 13 months later...
*before the hardcore gricers pull me up on this, I'll admit that I actually took Silverlink to Willesden Junction then the Bakerloo to Paddington, OK