There's a consultation to make TV ad breaks longer
www.bbc.co.uk/news/uk-61997064
The regulator's current rules state that, for channels three to five, the "total amount of advertising in any one day must not exceed an average of seven minutes per hour of broadcasting".
The channels can run advertising breaks of up to eight minutes per hour during prime time periods of 18:00-23:00 and 07:00-09:00
I have lived in the USA - admittedly a while ago - and they seemed to have endless ad breaks.
But TBH - I tend to record a lot of things and skip through the ads. Or watch on streaming platforms.
If there were long ad breaks, that would be really disruptive to a film or series. I can just about cope now, but it's annoying when they come in the middle of a crucial plot point