As I read it, it's all on "stop" at the moment - no money and no concrete plans to resume.  Personal view - it is seen as   more important to get people from Acton to Solihull as quickly as possible in 10 years time than it is to complete jobs which in some cases were already started.  But yet with advancing technology, that just might make sense.

Works started and - would you describe them as abandoned? - at Thingley Junction.



Personal view - from my armchair - would be the Didcot to Oxford and Cocklebury Lane and Parkway to Temple Meads would be the next sensible steps.  So many services would then be able to go pure electric; does not cut the need for power (moves it away from the train) but at least it can be sustainable and not fossil, trains last longer, have better performances curves, and can still electrically do London - Cardiff even when Badminton is closed for engineering or flooding.

Also makes sense for freight to get electric to Westbury and the quarries - via Pewsey and via Melksham - nd that brings in more electric passenger trains too. 

 
Not sure if there are any plans for overhead Electrification in the West region.

Maybe
Stapleton road bank
Chippenham to Bristol
Cardiff to Swansea(possible on to LLanelli and Carmarthen

Although over head wires never look pleasant,especially in pretty view areas

Three places in this neck of the woods I would never like to see overhead wires is St Ives Newquay and Falmouth
with the Severn Beach line and Portishead lines.
Just wondering if the scheme on the Greenford branch could be introduced with underneath charging points at the the terminating station on the five routes mentioned.