The UK with Dems/GOP

[King of Kensington]

Would English Republicans resemble Massachusetts Republicans?

[King of Kensington]

Jews in this scenario would be a solid Democratic group, especially considering that there is not a significant Orthodox Jewish population in the UK. This makes Hendon, Finchley, Barnet, Bury, and East Renfrewshire some of the more (historically) solid Democratic urban-suburban areas.

British Jewry is more Orthodox and traditional than American Jewry, including a sizeable nominal Orthodox population. Most who belong to synagogues belong to Orthodox synagogues.  Reform Judaism is weak in the UK. 

[King of Kensington]

Evangelicals are a marginal force in British politics, and it seems that Conservatism of the British type isn't objectionable to a lot of Democratic constituencies - whether rural New Englanders, American Jews or wealthy urban residents (save the obvious cultural symbols specific to the UK like the monarchy).

The GOP strength in state elections in Massachusetts and Vermont shows that conservatism can indeed adapt.

[King of Kensington]

Some figures on British Jews.

Synagogue membership:

Central Orthodox  24%
Strictly Orthodox (Haredi)  13%
Reform  11%
Liberal  5%
Masorti (Conservative)  2%
Sephardi  2%
No affiliation  44%

Identity:

Secular  34%
Ultra-Orthodox   18%
Modern Orthodox  14%
Reform  14%
Traditional  10%
Liberal  6%
Conservative  2%
Sephardi  2%

https://en.wikipedia.org/wiki/British_Jews#Religion

[King of Kensington]

People forget that the absolute immoveable base of the Tory party (as has been for as long as living memory) is aesthetically pleasing, fairly affluent/lacking in deprivation rural (note rural instead of remote) small towns and villages. Vermont, and New England in general, has this in spades.

That's a good way of looking at it.  And Republicans used to do well among rural New Englanders.  In England it's a demographic the Tories could ill afford to lose.

[King of Kensington]

Jews in this scenario would be a solid Democratic group, especially considering that there is not a significant Orthodox Jewish population in the UK. This makes Hendon, Finchley, Barnet, Bury, and East Renfrewshire some of the more (historically) solid Democratic urban-suburban areas.

British Jewry is more Orthodox and traditional than American Jewry, including a sizeable nominal Orthodox population. Most who belong to synagogues belong to Orthodox synagogues.  Reform Judaism is weak in the UK. 

Right. I believe I meant Hasidism, which I think is much less prevalent in London (outside of Hackney) than in the greater NYC area.

I suspect the proportions in NYC and London are similar.  And London is about 70% of British Jewry.  The proportion of ultra-Orthodox is 3 times higher for British (mostly London) Jewry compared to American Jewry.  Manchester is the second largest Jewish community in the UK, and there's a significant ultra-Orthodox population in Salford.