I've just looked up some articles about this, and @EmmaMaria 's post was also, frankly, pretty misleading. The statement, "The other 28 were guilty of minor offences such as possession or in at least one case a driving offence." is not correct. Our of the 29, one appears to have been convicted of murder, but the other 28 or so can't reasonably be described as "minor offences". The BBC says, "The individuals on the flight - who numbered more than 30 - included 14 people convicted of drugs offences, six people convicted of a violent crime and one person convicted of dangerous driving." 14 people convicted of drugs offences doesn't mean 14 people convicted of simple possession, "drugs offences" covers quite a range up to and including massive dealing. Dangerous driving isn't what most people would ever think was just a "driving offence".
The Independent said, "Vance Brown, the father of Chevon Brown, 23, who was placed on the flight after serving a seven-month sentence for a driving offence – the only crime he has been convicted of – said he felt “sick to his stomach” by the home secretary’s claims." https://www.independent.co.uk/news/uk/home-news/sajid-javid-jamaica-deportation-crimes-home-office-hostile-environment-immigration-a8767986.html
If you search for that name, however, he didn't serve a 7 month sentence, he spent 7 (elsewhere it says 8) months in prison out of a 14 month sentence (taking it over the 12 months I mentioned above, which is a crucial test). Turns out that Chevon Brown was arrested after a high-speed car chase through Oxford (115mph!) and had no licence or insurance. "The 21-year-old led a police chase for about five minutes, drove on the wrong side of the road, through red lights and across front gardens outside a block of flats"
https://www.bbc.co.uk/news/uk-48237126
Whether or not you think those particular deportations were right or wrong, it is no more correct to say 28 of them were for "minor offences" than it is to say they were all rapists, murderers, etc