Barbara Castle's set with the lion in Mayfair 18-09, 1983-09 was credited to Siwer Ohlsson.
Related pics. in Newlook (Fr) no.13, 1984-09 were credited to "Cosmos/Terence Spencer/Siwer Ohlsson".
We need to beware that:
- mags. at times perhaps made mistakes in the photog. credits?
- several photogs. seemingly at times also operated as distributors/re-sellers of other photogs' work.
So I'm not denying the possibility of connexions between Peter Flodqvist and Allan Sass, or Siwer Ohlsson and Allan Sass, just urging caution without significant (repeated) evidence.