I'm feeling ridiculously pleased with myself. I've had no heating all day except for a very small plug in oil filled radiator. DH is working on a house 150 miles away. He suggested it might be a pressure issue and he'd fix it when he got home. It felt like I was living in the North Pole. I felt like I couldn't wait. I hunted about on YouTube and found a clip explaining how to top up the pressure on an Ideal boiler and it only took 5 minutes and my central heating is now back on. I'm not good with practical DIY so I'm feeling very smug and snug now too. DH will be 😯.