We sometimes have discussions about the police, and it may be useful to have to hand, sites that show work that happens to question or bring various police actions to light, and/or where you can find information.
A site where you can add your experiences: police-me-too.co.uk/ this is their Twitter page: twitter.com/PoliceMeToo. The page makes for hard reading though.
There is a mechanism for super complaints. Published ones are here: www.gov.uk/government/collections/police-super-complaints
Three most obviously deal with women and girls but that is not the only ground they cover. Here is the Police Me Too account on super complaints: twitter.com/PoliceMeToo/status/1591863955076808705
Complaining about your local force will be via the "Professional Standards Department". Your local force should also advertise hearings into police misconduct and allow the public to observe proceedings. You might also want to look at your local police and crime commissioner page to see what they do about complaints.
Complaining to the IOPC is different: policeconduct.gov.uk/complaints-reviews-and-appeals/make-complaint
The inspectorate is here: www.justiceinspectorates.gov.uk/hmicfrs/ you can search for your own area. These are the ones under particular watch: www.justiceinspectorates.gov.uk/hmicfrs/about-us/what-we-do/our-approach-to-monitoring-forces/police-forces-in-engage/
Neil Wilby is an investigative journalist and has a webpage: neilwilby.com/ scroll down to see a list under 'categories' and there are topics, law enforcement organisations, and forces that he's covered.
Michael Gillard is another: theupsetterstrikes.substack.com/ you can sign up for the newsletter. Some of his work is picked up in MSM such as this in The Times last month: twitter.com/mr_gillard/status/1583754858254913536, and this which was on Newsnight about whatsapp groups: twitter.com/mr_gillard/status/1577911706449240067. He's written books on his investigations.
There is an inquiry into undercover policing. The timetable is here: www.ucpi.org.uk/about-the-inquiry/#timetable, with other information here: www.ucpi.org.uk/hearings/
In May this year, Women's Grid published an article on the inquiry and women: www.womensgrid.org.uk/?p=19174 plus there is Guardian coverage from 2015: www.theguardian.com/uk-news/2015/nov/20/met-police-apologise-women-had-relationships-with-undercover-officers