I've been looking around for a large decent swiss roll tin to make a chocolate log for Christmas and found our local Wilkinsons had the Prestige Bakemaster 57135 (38 x 30 x 2 cm) Oven Tray for £4. This is by far the cheapest I've found this tray - some are over £10 and they had other prestige tins at a great price too. I've already made a chocolate log with this and it worked a treat!
Prestige lifetime guarantee, oven safe to 240, dishwasher safe, heavy gauge, non stick inside and out.