There is no new policy or procedure in place. If an infringement is deemed to be serious enough a provisional suspension will likely take place with referral to the GASCO course or, in extreme circumstances, legal action will follow. The only "new-ish" part of this is the likely increase in chances of suspension. The stats are not improving so something needs to be done. We have examples at our airport of people switching off transponders to avoid being caught, deciding to enter controlled airspace without approval because the controller sounded busy etc etc. These show shocking displays of airmanship and those involved deserve to be prosecuted.
The exception to all of this is, if you can prove you did everything to avoid an infringement (use listening squawk, moving map etc) then mistakes will never result in prosecution. Mistakes do happen but you need to do everything to mitigate infringements during your pre-flight brief. Fly with an up to date chart, read your NOTAMs etc and display good practice.
UK airspace design is pretty poor and in some cases, confusing. However, if you do not understand a piece of airspace then grab some time with an instructor to ask some questions on how to navigate around it.