Yes, my mistake. Haven't tried the Elizabeth line. These do help if you are travelling to / from London but getting to Heathrow from the South West remains challenging. My nearest station is Brockenhurst (which although small is on a London mainline). It's 80 miles by road, or by rail, a 2h 10 minute journey (with typically 2 to 4 changes, longest is 2 hrs 40 mins) that would cost £87 (!) travelling tomorrow off-peak. Not fun with suitcase.