Further to my previous post.
As Paul Thomas was jailed in 1983 I presume no DNA sample had (or has) been taken from him. I can't find anything else about him after his conviction but presume he was still alive when the Theroux doc came out in 2023.
If he had any involvement in the murders of Lynne Weedon and Eve Stratford in 1975 he would only have been around 19 years old. In the Elizabeth Parravincina [or Parravicini] case he would have been a couple of years older and he did live very close to her parents in Isleworth. Elizabeth lived in Italy but was staying with her parents at the time and had been returning from seeing Fellini's
Casanova in the West End.
"Liz Graham was a popular and talented member of the [Questors Theatre in Ealing] Student Group in 1969/70, joining it shortly after leaving school...Unable to join the Second Year Group - she had decided instead to marry
Ricc Parravicini, another popular and familiar figure at The Questors - nevertheless as an acting member she gave memorable performances in David Mowat's
John in the 1971 New Plays Festival and in
Ding Dong in the Christmas of that year. Shortly after that she and Ricc moved to Rome and started a family, but nevertheless kept in touch with many of their friends at The Questors.
On 8 September [1977], while on a visit to her family in Osterley, Liz was the victim of a brutal and senseless attack of unspeakable horror."
A possibly linked case is the murder of Patsy Morris. From Wikipedia:
"Links have also been suggested between Weedon and Parravincina's murders and that of
Patsy Morris, another local schoolgirl who was killed less than 2.5 miles away from Weedon at Hounslow Heath in 1980. Immediately after Morris's killing, it was noted in the press that she had been the third girl to be murdered in the area in the last 5 years, following the murders of Weedon and Parravincina in 1975 and 1977, respectively. Morris, 14, had gone missing from the area on 16 June of that year, and two days later was found half-naked and face down in undergrowth on the Heath, with her clothing pushed upwards over her body. This suggested a sexual motivation to the killing, as in Weedon's case, although there was in fact no sign of sexual assault or rape."
Interestingly given Paul Thomas' theft of a police radio, according to Cold Case Investigations UK:
"In December 1990 The Metropolitan Police put out an appeal for a man who had been seen driving a blue van and using a radio telephone or similar device. He had been seen using the device in a blue van close to Patsy’s home. Police do not believe that him to be a suspect in the murder but, they felt he may have seen something that would help identify Patsy’s killer. Was that man you? I am surprised that such a device was in use as early as 1980 and I suspect it was more like a walkie-talkie radio or Citizens Band (CB) radio."