Tube Parking outside new ULEZ west London.

[RSGulp]

I live in Gloucestershire and when I travel into London I used to park in Westfield, Shepherds Bush. It’s easy to get to, relatively cheap, clean, safe and minutes from Shepherds Bush tube.

But the new ULEZ has added £12.50 to the journey.

Can anyone recommend an alternative safe carpark not far from a tube station and accessible from the M4 but just outside of the wider ULEZ?

Maybe I’ve been spoiled by Westfield and just need to swallow the extra cost. Thanks in advance.

[descentia]

I used to park near South Ealing tube but it looks like that has all been turned into residents or restricted hours zones. From looking at streetview images the only option was further out in Hounslow which I didn't fancy given I'd be coming back in dark.
I ended up parking in Farnborough and getting the train in, it's 38-52 minutes to Waterloo, of course it's more expensive but there's no messing about with the M25 or traffic leaving the city.