https://www.astro.com/astro-databank/Sutcliffe,_Peter

Astro data bank gives accuracy rating B.

Chart with Solar Arc progressions for date of death. If this birth time is roughly accurate, within about one degree on the angles, then the Solar Arc IC is conjunct his natal Sun, and the Solar Arc converse Midheaven is conjunct his eighth house Sun's antiscion in 18.5 degrees Cancer.

Chart with transits for date of death.

Birth time is probably really close:

Secondary progressed ascendant reached the quincunx to natal Moon-Saturn conjunction in house 8 (orb is 11' with Moon, 03' with Saturn). Quotidian ascendant for the day is semisquare Moon-Sat.

Secondary progressed Sun is still in orb on natal Mars at the end of house 8.

Secondary progressed Moon (carrying that h8 light from the prog Sun and being the natal ruler of H8 by sign and presence) has recently crossed the natal IC and is applying to the opposition with progressed Mars (25').

Transits for last night 9:30 pm (his last daily revolution adjusted for DST): 7 Leo was ascending, really close to his h8 Pluto in Leo); tr Sun square natal Mars; tr Mars opposition natal Jupiter (ruler of 1), the tr Moon joining tr Venus over natal Jupiter, opposing the aforementioned tr Mars.
The Pluto-Jupiter conjunction blatantly opposing his natal Moon-Saturn conjunction.

Solar return (tropical): SR Asc squares SR Saturn, which is near our current Jup+Pluto conjunction, in a sesquisquare with SR H8 Sun and Venus (and natal Sun too, in turn getting squared by Mars (h4 of the SR, ruler of 1 and 6 SR). Mercury and NN in SR H8 too. Moon right on the cusp of SR H12 (Placidus) coming from the square to natal Venus (H8) into conjunction with natal Jupiter (natal ruler of 1).

In the sidereal or precession corrected Solar return, the Moon reaches the square with SR Saturn and joins him in sesquisquaring natal Uranus from both sides. The ascendant in this SR trines that Sat-Moon natal conjunction in H8. Mars tightens its square with Sun-Venus and becomes angular in this return.

Lunar return (tropical): The LR ascendant is right on natal Uranus. LR Mercury (rules the asc of this return) square Saturn (09'), Moon, Jupiter and Pluto. Mars conjunct (2 degrees) the cusp of house 12.

Now if you're ready to have your mind blown, convert his chart to draconic and have a look at the solar and lunar returns you get (using true node).

Fraternally,
Sedna