I have a small double radiator in my bathroom approx size 43cm wide X 53cm high. It has developed a small leak on the bottom seam. Is this worth repairing or would it be more effective to buy a new one and if so is this size still available (it's about 15years old)
Not worth repairing, you should be able to fit a
50cm H / 40 Long, you will need a 1/2 - 1/2 M/F extension 25mm or 30mm to make up the slight reduction in length cost of radiator about £50
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.