Source is here: https://yougov.co.uk/topics/politics/survey-results/daily/2025/02/20/c33bd/1
That source allows you to see the results according to political affiliation. Pluralities of supporters of the Conservatives, Labour, and Lib Dems think that supporting Ukraine is more important.
The exception is Reform UK, whose supporters think that good relations with the USA are more important than supporting Ukraine.
The Uk is between a rock and hard place geopolitically. It seems that joining the eu is political suicide but aligning economically with the Usa means selling off the nhs.
I guess the best we can hope for is going our own way and hoping for some economic miracle . Maybe we’ll discover some more north sea oil…