>>> I had to contact my local council to deal with my neighbours children playing music at 930pm one evening
Good grief! When some families on our cul-de-sac have something to celebrate (such as a birthday), it's not unknown for them to hire DJs with big professional sound systems, which they then place out on the street (alongside hired bouncy castles and booze-laden bars, etc). Their kids are usually yelling and screaming up and down the road until about midnight, with the music never ceasing to rattle everyone's windows in the street before 3am at the earliest. It would never even occur to me to complain about it! The people in your street must be really glad to see that the grumpy old grouch down the road is moving out!
However, to answer your question . . .
It's extremely unwise to fail to mention anything relevant on that section of the form. There have been cases where sellers have been ordered to pay damages, running in tens of thousands of pounds, for failing to do so.
Simply be honest on the form. e.g. "I asked the Neighbourhood Team to intervene when loud music was coming from a neighbour's house at 9.30pm on one evening in November 2021. However this was an isolated incident and there have been no similar problems either before or after that time".
Such a statement is
(a) entirely true ; and
(b) highly unlikely to deter any serious prospective buyer.