Of course they are regardless of how organic the right wing overton window shift of late really is, it's of great benefit to them to have the UK and European strategic interests diverge, a nightmare scenario for both the USA and Russia is a Europe that is competent militarily and united as European GDP and population numbers could easily produce an autonomous Europe that doesn't need to take orders on matters like Greenland or Iran and one which could defend Ukraine without needing to be subject to the whims of whoever happens to be in the oval office. So the directive from these actors is simple keep them infighting.