I worked on developing the ORR standards for transverse profile in 1998-99, and delivering the Nottingham NET Phase 1 embedded rails
Manchester's JV project team (headed by Laing O Rourke) had 10 years of gradually getting the methods, scheduling & pricing better to deliver ahead of schedule and on budget, with the concrete abutting the insulation that fitted the rails precisely screeded to be just 2mm higher than the steel edges, with a rubber plug strip that kept the rail groove clean and free of spilled concrete, as well as providing the screeding bar for finishing. Yet to see this on any work on Edinburgh's phase 2
Edinburgh phase 1 was from the outset well short of the official standard, and throughout the on-street section the load transfer sections of the top slab concrete (30cm wide with steel bars connecting the 5m top slabs which crack and fall out - many with patching in tarmac as well as concrete. They can often be heard and seen moving as buses pass over them with evidence of water underneath being 'pumped' as wet areas around the cracks (this pumping accelerates disintegration & failure)
'Top Shop' - a bit vague - is this the mess at the foot of the Mound or at St Andrew Street South junction?
Doesn't just fail embedded rail but also pavement flatness standards with a total mash-up of concrete, tarmac & slack bond laid, blocks
Was bus driver too close behind? Chris Oliver's paper and others highlight this as a key factor in c.50% of cyclist falls
Has the victim secured CCTV from bus operator (overwrites every 10 days approx)
Have Police Scotland been advised if injuries occurred, even for a single vehicle crash they need to make a STATS19 entry for UK crash statistics. In a very serious case a cyclist died after 'being found' injured on the road, and the couple in the car that was at the scene only called for an ambulance (heard arguing about calling the police) and vital (transient) evidence was lost for investigation.
https://www.kentonline.co.uk/ashford/news/police-apology-for-handling-of-cyclists-death-184825/
Similar detail for the death of Roger de Klerk (3.5 years before Zhi Min Soh - in an identical crash where he fell turning right across tram track (with appalling transverse profile) in Croydon, and the bus driver behind ran over him (also a female driver & also IIRC a 20mph speed limit)