Glass is generally a minor problem in London as long as you ride in those areas of the carriageway that are well-swept by the passage of car wheels. Exceptional times like post-revelry evening mornings are of course very annoying, and it always causes a huge workload for councils to remove all the crap that drunk people smash. But, yes, usual advice--avoid riding too close to the kerb, keep your tyres pumped up well, etc. Don't rely too much on 'puncture-proof' tyres--they won;t necessarily work that well if your positioning isn't right, for instance.
Glass is generally a minor problem in London as long as you ride in those areas of the carriageway that are well-swept by the passage of car wheels. Exceptional times like post-revelry evening mornings are of course very annoying, and it always causes a huge workload for councils to remove all the crap that drunk people smash. But, yes, usual advice--avoid riding too close to the kerb, keep your tyres pumped up well, etc. Don't rely too much on 'puncture-proof' tyres--they won;t necessarily work that well if your positioning isn't right, for instance.