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.
Fair point. Arguably the British public has a more negative view of the EU than Europe as a whole though. So if the British public wants to increase trade with the EU then they would probably be fine with increasing trade with Europe as a whole.
By the way I’m not including Russia when I say “Europe”. They don’t even consider themselves European - they consider themselves Eurasian.