I was asked at the check in if I wanted an earlier flight as I was early. I decided to come forward an hour to the 1650 from the 1755. The 1755 came and went and Iberia had to get a larger aircraft. We were over 2 hours late and the correspondence from Iberia was zero. Utterly shocking. I missed my connecting train in London. As for T5 Heathrow that made the flight even worse.