England has 543 seats. Restore Britain, Reform UK, the Conservatives and the SDP most often ask for the same voter here. Under first-past-the-post that split changes who wins.
Wales has 32 seats and the same Great Britain parties, but Plaid Cymru leads in parts of the country. Record Plaid, Labour, the Liberal Democrats and the Greens as affiliation — and as Other if that is the intention. Ignoring Plaid in its heartlands gives the wrong tactical read.
Scotland has 57 seats. The SNP is the opponent across much of the country. The Conservatives have been the main unionist vehicle, while Reform UK and Restore Britain are both organising. An English squeeze chart does not transfer to the Highlands or the central belt.
Northern Ireland has 18 seats, also elected by first-past-the-post, but the contest is DUP, Sinn Féin, Alliance, SDLP, UUP and TUV. FUVI draws the boundaries and stores a declaration. It will not recommend a Restore, Reform, Conservative or SDP switch.