Meta 'too slow' during UK riots to deal with violent posts online / UK riots led to deterioration in asylum seekers' mental health, says report / Athens riots plunge Brit hols favourite into petrol bomb mayhem / Some police forces unprepared for summer riots, MPs find / Fears, anguish and frustration in a northern UK town hit by racist riots / Cross-party body will seek to rebuild UK community cohesion after riots / Hatred of police not racism motivated children in English riots, report finds / King praises response to 'lawless' UK riots in Christmas message - as he gives 'personal' thanks to medics / Police underestimated threat of violence ahead of England riots, says report / Man who fuelled fire outside migrant hotel given joint highest sentence over UK riots so far