Jenrick joined Reform UK on 15 January, hours after his sacking, and was later named the party's Treasury spokesman.
Resolved 15 Jan 2026
How this resolves
The landing market resolves on Jenrick's party affiliation as recorded in the UK Parliament members register (members.parliament.uk) and confirmed Reform UK statements.
The pattern behind it
4 of 5
In four of five modern defection episodes, the first mover was followed by another MP within six months. Jenrick crossed on 15 January; the six-month window closes in mid-July with the follower column still empty.
The first MP to switch party is usually not the last. We looked at five times since 1981 when an MP left their party for another. In four, another MP followed within six months. In the one exception, a general election got in the way.
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