The government is a minority, not a majority - that's the reason it had to spend one-and-a-half billion pounds of taxpayers' money to bribe the DUP to enter into a Confidence and Supply Agreement. The C&SA is not the same thing as a Coalition, and does not make the DUP a part of the government.

The Tories are a minority government, and it is completely undemocratic of them to expect to hold a majority on Parliamentary committees (thereby enabling them to railroad through amendments to EU Laws, and other subsequent Law-making, which otherwise may be defeated at the committee stage).

Confidence & Supply v. Coalition