Yes, these are the only parking tickets ever! One of them is for overstaying in a street car park 10 minutes longer than I paid for! One is for picking someone up at a taxi rank and the last one for unwitting blocking an entrance! So nothing major.
I didn't attend any court for any of these and there was no conviction. I simply did not pay the tickets within the 28 days, so the Local Councils registered it at the Traffic Enforcement Centre, which the issued an orders for me to pay those fines, which I did on time. See details here https://www.justice.gov.uk/courts/northampton-bulk-centre/traffic-enforcement-centre/frequently-asked-questions
I did have a speeding ticket once, back in 2012 but I told to attend a speed awareness course, which I did and that was the end of it. No court case. No penalty point. Just had to pay for the course and attend.
Is there any point in waiting till November, when 2 of the tickets will drop off the 12 months timescale ?