Complex sentence: Around 23,000 cases were identified during 2012/2013, the latest year for which records exist, however these exclude children age 16 and 17, and those who do not report abuse, so it is generally understood they underestimate the scale of abuse in the UK.
Split into simpler sentences: Around 23,000 cases were identified during 2012/2013, the latest year for which records exist. However, the figures exclude children age 16 and 17, and those who do not report abuse, so it is generally understood that they underestimate the scale of abuse in the UK.