Could the 3rd parties find success in the 2016 UK election?

[MaxQue]

No,

- SNP can't win a bigger landlide.
- LibDem heartlands actually have solid LEAVE majorities (South West, urban Yorshire and Midlands)
- Greens are sill reliant on Caroline Lucas
- UKIP lost 3 points in the polls and are being blamed for the current dysphoria in British society
-Probable low turnout (especially by the Remainers

Unless Labour or Tories split, nothing will change. Boris-led Tories will run on a right-wing populist platform all but ending UKIP. Labour will probably recover well enouugh to get a hung parliament from the Tories.

The only possible end to bipartisan politics in the UK is the end of FPTP. See : USA.

As would somewhere like Eastbourne, which barely voted Tory last year and just went remain in the referendum.

Eastbourne is also an LD run authority. Probably the starting point for an LD resurgence would be where they still control / have a strong bench in local government.