Party members who support the former London mayor's leadership bid describe themselves as very right wing, even by Conservative standards.
It's a strategically poor choice – and that's no coincidence.
American companies still face enormous uncertainty about how they'll be doing business in the UK and EU in the coming years, particularly as the April 12 Brexit deadline draws closer.
A guide from an EU law expert for British citizens who will be elsewhere in the EU on a no-deal Brexit day.
There are more than 300 contingency plans across government departments.
The UK's no-deal tariff plan was viewed in Dublin as a way to scare Brexiteers into supporting Theresa May's deal.
MPs can't actually prevent no deal with this vote, but that doesn't make it meaningless.
Even if there are delays, Britain produces half of the food it consumes and trade with the EU will not stop overnight.
The government has abandoned its plan to charge £65 for EU citizens applying for 'settled status' after Brexit – but what does it secure.
Tips from global conflict resolution on how MPs can find a way to agree on a Brexit deal.
There is little the EU can do while the UK is in disarray.
After her historic loss in parliament, the PM will hold cross-party talks to find a way out of the impasse. But will she really be listening?
Operation Brock's underwhelming test run goes to show how ill-prepared the UK is for a no-deal or hard Brexit scenario.
Because of its geography, the UK must put an end to uncertainty over asylum policy after Brexit.
A cross-parliamentary group hopes to prevent the UK from crashing out of the EU by blocking the government's taxation powers.
The former Chancellor was no economist, but he was better at politics than Theresa May.
What do you do when 'no deal' looks like a disaster? Stick another word in front of it. Problem solved.
No-deal preparations have been both criticised as being part of 'Project Fear' and used to show that Brexit will be disaster. Here's the history behind this kind of planning.
Turkey, pigs in blankets, potatoes, parsnips, carrots, Brussels spouts and cranberries – which are safe and which aren't?
If the UK left the EU without a deal, it could have an impact on passports, driving licences and mobile phone charges.