Anything on the A303, it's a virtual desert.
Is it?
Going West -> East
3*60kw dual GRIDSERVE Units - Moto Exeter (technically not A303 but it's a staging point).
2*50kw Instavolt Honiton
2* 62.5/125kw Instavolt Newcott
1*50kw Osprey Stonemasons Illminster
1*50kw Swarco Illminster
1*50kw Swarco Illchester
2*50kw Instavolt Wincanton
1*50kw Osprey Wagtail Wincanton
2*50kw Geniepoint Morrisons Wincanton
1*50kw Swarco Town Centre Wincanton
1*50kw Swarco Leigh Common
2*50kw Instavolt Amesbury Town Centre
4*80kw/120kw instavolt at Amesbury Solstice Park (with another 4 coming “soon”)
1*50kw BP Pulse Amesbury Solstice Park
1*50kw BP Pulse Amesbury Holiday Inn Solstice Park
(16*250kw Tesla supercharger, if you drive a MuskMobile)
1*50kw Geniepoint Weyhill Eastbound
1*50kw Geniepoint Weyhill Westbound
2*50kw Osprey Chakhill Blue Pub Andover
1*50kw Geniepoint Esso Garrate Andover
Then onto the M3.
I'll admit there's a few sections (between Leigh Common and Amesbury) where there's literally nothing, but that's “only” 30 miles. Plus there's a bunch of new Starbucks drive thrus that will presumably get instavolt units and a few MFG garrages that will get their 80/150kw units too. One MFG garage I noticed driving down this summer sits right under an 11kv HV line, which would be a perfect location for a bank of their HPCs.
Okay there's no true HPCs yet. The closest are the ones at Newcott if you're the only car there (125kw) or Amesbury if you have an 800v Vehicle (120kw, otherwise 80kw). It would be nice to see some 150kw+ units go in that can actually do 300+ amps, but I wouldn't call it a desert?
Edit: I'll admit the fact Tesla have managed to put 16*250kw units in at Amesbury where the other major operator (Instavolt) has only managed to fit 4 units with half the power output demonstrates how remarkably unaspiraitional most charging providers are. I know everyone gets excited about the 12*350kw units at Rugby services, but will that seriously be enough in three years time? Or even two?