The Ukrainians are a nation with the right to self-determination.
The Palestinian Arabs are a nation with the right to self-determination.
The government of the state on the territory of which we live agrees with the first proposition, and would claim that it agrees with the second proposition, but in practice thwarts the self-determination of the Palestinian Arab nation.
The government of the UK and other UK politicians and ex-politicians describe the actions of the Russian Federation in Ukraine as crimes, and call for Putin et al to be prosecuted in the International Criminal Court. They do not do so in the case of the crimes against international law committed by the State of Israel in the Gaza Strip War,
What is sauce for the goose should be sauce for the gander, but it is not.
Ukraine and the Gaza Strip cannot be compared, it is said. Each attempt to remove, or fail to allow, the right of self-determination has its own particularities, but universal principles can and should be applied.
Well I think they don't verbally support the right of Palestinian self determination. Because if it were a right it would not be negotiable, or an end result of negotiation. Even if they want a peace process leading to a two state solution they don't recognise Palestine in the immediate, whereas they do of course recognise Israel in a way that is non-negotiable. This is also why the phrase "from the river to the sea" is considered beyond the pale but only from the Palestinian side.