This only happened in the last hour and I am still shaking. I decided to make some cookies and used a Lakeland baking tray I got as a Christmas present. It is flat, with one side raised for you to grip and seemed oversized and awkward for the oven shelf. Similar to the one below. Anyway, after ten minutes in the oven I decided to check on my biscuits and wasn't concentrating fully as I did so, causing about three of the biscuits to slide off the edge of the tray. One fell right into the flame of the gas oven and caught fire. I managed to turn the oven off and somehow (god knows how I didn't burn myself) swatted at the flame with a tea towel, it went out but then reignited. I managed to grab some tongs and get the bsicuit out of the oven. It was very scary and I feel awfully shook up. That baking tray has gone straight in the bin. Please beware of these edgeless trays, I don't think they are safe to make small goods on at all.