53 House LLP
UK short positions the FCA published under this name: 11 companies and 97 disclosures between 19 Feb 2015 and 4 Feb 2021. Each figure is that position as a percentage of the company's issued share capital, not a money value, and percentages are not comparable or summable across companies.
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Positions open when the register closed
No position was still open in the register's final snapshot of 10 Jul 2026: every chain below had already fallen back below the 0.5% publication threshold.
Full disclosure history
Every disclosure the archive holds, grouped by company and ordered oldest first within each chain. A chain begins when the position first crossed 0.5% and ends either at the freeze or at the last disclosure before it fell back below the threshold.
DS Smith PLC
closed 4 Feb 20216 disclosures · peak 0.73% · first 8 Jun 2020 · last 4 Feb 2021
8 Jun 2020 0.56% · 9 Jun 2020 0.61% · 10 Jun 2020 0.73% · 5 Jan 2021 0.66% · 3 Feb 2021 0.52% · 4 Feb 2021 0.45%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
JOHN WOOD GROUP LIMITED
closed 15 Jul 20204 disclosures · peak 0.72% · first 12 Jun 2020 · last 15 Jul 2020
12 Jun 2020 0.72% · 13 Jul 2020 0.66% · 14 Jul 2020 0.57% · 15 Jul 2020 0.49%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Arrow Global Group PLC
closed 26 Mar 20204 disclosures · peak 0.82% · first 21 Feb 2018 · last 26 Mar 2020
21 Feb 2018 0.56% · 27 Feb 2018 0.60% · 28 Feb 2018 0.82% · 26 Mar 2020 0.21%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Ultra Electronics Holdings PLC
closed 23 Mar 202030 disclosures · peak 2.31% · first 23 Jan 2017 · last 23 Mar 2020
23 Jan 2017 0.61% · (6 further disclosures) · 3 Feb 2017 1.80% · 14 Aug 2017 1.63% · 8 Jan 2018 1.82% · 9 Jan 2018 1.92% · 10 Jan 2018 2.04% · 18 Apr 2018 2.17% · 2 Jul 2018 2.20% · 9 Jan 2019 2.30% · 4 Mar 2019 2.22% · 20 Mar 2019 2.31% · 25 Feb 2020 2.21% · 26 Feb 2020 2.07% · 27 Feb 2020 1.94% · 3 Mar 2020 1.85% · 5 Mar 2020 1.69% · 6 Mar 2020 1.49% · 9 Mar 2020 1.33% · 10 Mar 2020 1.26% · 17 Mar 2020 1.04% · 18 Mar 2020 0.92% · 19 Mar 2020 0.82% · 20 Mar 2020 0.64% · 23 Mar 2020 0.24%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
BRITVIC PLC
closed 17 Jan 20203 disclosures · peak 0.61% · first 24 Apr 2018 · last 17 Jan 2020
24 Apr 2018 0.61% · 20 May 2019 0.50% · 17 Jan 2020 0.33%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
AGGREKO PLC
closed 12 Sep 20195 disclosures · peak 0.88% · first 2 Nov 2018 · last 12 Sep 2019
2 Nov 2018 0.60% · 6 Nov 2018 0.72% · 8 Nov 2018 0.88% · 11 Sep 2019 0.57% · 12 Sep 2019 0.00%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Inmarsat PLC
closed 25 Mar 20193 disclosures · peak 0.69% · first 6 Feb 2019 · last 25 Mar 2019
6 Feb 2019 0.54% · 7 Feb 2019 0.69% · 25 Mar 2019 0.00%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Wm Morrison Supermarkets PLC
closed 2 May 20182 disclosures · peak 0.56% · first 17 Oct 2017 · last 2 May 2018
17 Oct 2017 0.56% · 2 May 2018 0.39%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
CARILLION PLC
closed 28 Sep 201719 disclosures · peak 3.23% · first 19 Feb 2015 · last 28 Sep 2017
19 Feb 2015 0.57% · 20 Feb 2015 0.85% · 24 Feb 2015 1.07% · 25 Feb 2015 1.42% · 26 Feb 2015 1.53% · 27 Feb 2015 1.76% · 2 Mar 2015 1.81% · 13 Apr 2015 1.97% · 14 Apr 2015 2.22% · 15 Apr 2015 2.51% · 19 May 2015 2.62% · 21 May 2015 2.83% · 26 May 2015 2.97% · 27 Aug 2015 3.23% · 10 Jul 2017 2.81% · 12 Jul 2017 1.74% · 26 Sep 2017 1.20% · 27 Sep 2017 0.68% · 28 Sep 2017 0.31%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
CAPITA PLC
closed 13 Jun 201710 disclosures · peak 0.92% · first 8 Dec 2015 · last 13 Jun 2017
8 Dec 2015 0.56% · 27 Jan 2016 0.65% · 25 Feb 2016 0.78% · 29 Sep 2016 0.92% · 9 Dec 2016 0.74% · 13 Dec 2016 0.68% · 14 Dec 2016 0.53% · 6 Jan 2017 0.62% · 3 Mar 2017 0.71% · 13 Jun 2017 0.44%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
PETROFAC LTD
closed 30 May 201711 disclosures · peak 1.29% · first 3 Nov 2015 · last 30 May 2017
3 Nov 2015 0.66% · 5 Nov 2015 0.78% · 9 Nov 2015 0.80% · 10 Nov 2015 1.12% · 26 Jan 2016 1.29% · 12 Dec 2016 1.18% · 13 Dec 2016 1.04% · 14 Dec 2016 0.76% · 15 Dec 2016 0.76% · 26 May 2017 0.57% · 30 May 2017 0.45%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
Frequently asked questions
- Which UK companies did 53 House LLP short?
- The FCA's named register recorded 53 House LLP against 11 UK companies between 2015 and 2026, across 97 disclosures. No position was still open when the register closed on 10 Jul 2026.
- Is this list current?
- No. It is a frozen archive. The FCA stopped publishing position-holder names on 13 July 2026 and now publishes one anonymous aggregate per company per day, so no new named UK disclosure exists after 10 Jul 2026. Today's UK figures are on each company's own page.
- Was this the whole of 53 House LLP's UK short book?
- No. Only net short positions of 0.5% or more of a company's issued share capital were published with the holder's name. Smaller positions were reported to the FCA privately and never appeared in the register, so the archive is a floor, not a full book.
Source: the Financial Conduct Authority's daily short positions file, captured on 10 Jul 2026 from fca.org.uk and archived unchanged. Figures are as the FCA published them; this site is not affiliated with the FCA. Nothing here is investment advice.