Blooming northerners! At least you actually have a railway line...
The rail network west of Exeter is practically stuck in the Victorian Age. We're reliant on one vulnerable line that travels through Dawlish, that was closed for two months after being destroyed in the storms earlier this year. The trains themselves are slow and often delayed, and frankly it's often quicker and easier to drive.
I think the HS2 project is important, even with full electrification the existing lines will be at full capacity in the coming decades, but there are other rail schemes that should get the go ahead first. An expanded HS3 sounds like a decent proposal as the journey times east to west are absolutely atrocious, as Azog rightly said you're not going to get growth in the north if the only transport links are with London. We also need electrification across the country. Upgrading the whole network is a job that will likely take decades, but for now we should at least be concentrating on the main lines.
Finally, in the South-West we seriously need an alternative to the Dawlish coastal line, either a new inland route or reopening the old Tavistock line. It may not sound that important compared to these schemes in the north, but I do believe it is appalling that in the 21st century an entire region of this country can be cut off from the public transport network due to a single storm.