If it makes the OP feel any better, which I doubt, he is in very good company. Even the now former Archbishop of Canterbury got done for "speeding" at 25 mph, outside his own home too, though it's a bit bigger than most.

https://www.bbc.co.uk/news/uk-england-london-65572257

The one that makes me gulp a bit is that if you are deemed to be travelling at 32 mph, and you are say a youngster who has recently passed their driving test in the last 2 years, if you get caught it will be 6 penalty points, and therefore your licence isn't suspended, it's fully revoked. You have to start the whole process of getting a driving licence and passing the test from scratch, where it can take many months to get a test date, if you don't live in very rural parts of the UK.

I'm not over-fond of them myself, but in the context of Wales the increased rollout of 20 mph limits has reduced taxpayer spend by £45million, reduced deaths on the roads by 35% and cut the average cost of car insurance by around £50 per person. There are some advantages of living in a democracy with respect for the rule of law, selective views on that respect can be justified by any criminal. Some rollback on the Welsh experience has happened, not least because the democratic process has duly applied pressure on the new First Minister.

Besides, it's just voluntary taxation, if you are not spotting the speed signs then it's difficult to argue you are paying due care and attention.