DBS
Under the new guidelines we are no longer required to jump through this particular hoop for performances of this type. For more information see here.
Fire
The Magic Lantern used is a genuine 1910s electric lamp. There is therefore no naked flame to pose a fire risk, the lantern can become hot to the touch however and therefore is never left unattended whilst in operation.
Insurance
Professor Llusern has public liability insurance for £5,000,000 as evidence of good practice. Certificates available upon request (as above).