British television programs are way more interesting than average American fare. They tackle much more believable topics and have much better actors. British actors have superior acting skills, and look like real people. American actors look like actors, it is impossible to relate to plastic people. This patticural movie doesn't belong to the top of British TV production. The script tries very hard to outsmart itself, so in return becomes completely contrived. The people are real, but the situation they are supposed to convey is not, hence the problem. If you are able to get over the imperfections and occasional messiness of the script, you will be entertained, but not much more.
Review of Like Father Like Son
