Asbestos action

We've been asked advice by a very small building firm who undertook some shop refurbishment. On looking at ceiling tiles, the builder asked the shop owner if they contained asbestos and was assured that he'd had a survey carried out and this was negative.
A member of the public reported to the HSE that material which looked like asbestos was in skip in the street. Examination showed this to be crysotile and amosite (white and brown asbestos.)
What the builder should have done was:

1. Demand to see a copy of the asbestos survey report and/or
2. Take samples and have them analysed

before starting any work which would disturb the tiles. Any work involving removing the tiles would have to have been done by a licenced asbestos remover, using appropriate techniques.