BG Master Fund PLC
UK short positions the FCA published under this name: 10 companies and 93 disclosures between 11 Jul 2013 and 26 Nov 2025. 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
1 position of 0.5% or more still disclosed in the register's final snapshot, 10 Jul 2026.
| Company | Position | Position date |
|---|---|---|
| SPIRENT COMMUNICATIONS PLC | 0.52% | 25 Sep 2025 |
"Position date" is the date the holder's last disclosure applied to, not the date the position was opened.
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.
SPIRENT COMMUNICATIONS PLC
open at the freeze1 disclosure · peak 0.52% · first 25 Sep 2025 · last 25 Sep 2025
25 Sep 2025 0.52%
ALPHAWAVE IP GROUP PLC
closed 26 Nov 20254 disclosures · peak 0.52% · first 19 Sep 2025 · last 26 Nov 2025
19 Sep 2025 0.50% · 27 Oct 2025 0.49% · 28 Oct 2025 0.52% · 26 Nov 2025 0.49%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
PRIMARY HEALTH PROPERTIES PLC
closed 14 Aug 20258 disclosures · peak 0.70% · first 22 Jul 2025 · last 14 Aug 2025
22 Jul 2025 0.52% · 28 Jul 2025 0.61% · 30 Jul 2025 0.70% · 31 Jul 2025 0.65% · 1 Aug 2025 0.59% · 8 Aug 2025 0.49% · 12 Aug 2025 0.51% · 14 Aug 2025 0.00%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
SYNTHOMER PLC
closed 12 Oct 20233 disclosures · peak 0.62% · first 3 Oct 2023 · last 12 Oct 2023
3 Oct 2023 0.55% · 4 Oct 2023 0.62% · 12 Oct 2023 0.00%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
BOOHOO GROUP PLC
closed 9 May 202313 disclosures · peak 0.90% · first 21 Sep 2022 · last 9 May 2023
21 Sep 2022 0.56% · 22 Sep 2022 0.71% · 11 Oct 2022 0.80% · 1 Nov 2022 0.90% · 23 Nov 2022 0.80% · 8 Dec 2022 0.79% · 14 Dec 2022 0.69% · 15 Dec 2022 0.56% · 16 Dec 2022 0.48% · 17 Jan 2023 0.52% · 17 Feb 2023 0.69% · 23 Feb 2023 0.70% · 9 May 2023 0.09%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
VODAFONE GROUP PUBLIC LIMITED COMPANY
closed 10 Mar 202146 disclosures · peak 0.77% · first 25 Feb 2016 · last 10 Mar 2021
25 Feb 2016 0.61% · (22 further disclosures) · 2 Dec 2019 0.60% · 16 Dec 2019 0.59% · 27 Jan 2020 0.60% · 28 Jan 2020 0.59% · 29 Jan 2020 0.60% · 19 Feb 2020 0.59% · 20 Feb 2020 0.60% · 21 Feb 2020 0.59% · 24 Feb 2020 0.60% · 3 Mar 2020 0.59% · 6 Mar 2020 0.60% · 10 Mar 2020 0.59% · 7 Apr 2020 0.60% · 7 Jul 2020 0.70% · 24 Jul 2020 0.69% · 3 Aug 2020 0.70% · 4 Aug 2020 0.69% · 5 Aug 2020 0.70% · 11 Aug 2020 0.69% · 14 Aug 2020 0.70% · 16 Sep 2020 0.69% · 8 Jan 2021 0.70% · 10 Mar 2021 0.35%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
ROLLS-ROYCE HOLDINGS PLC
closed 13 Nov 20205 disclosures · peak 0.99% · first 28 Oct 2020 · last 13 Nov 2020
28 Oct 2020 0.99% · 6 Nov 2020 0.85% · 9 Nov 2020 0.96% · 12 Nov 2020 0.67% · 13 Nov 2020 0.18%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
ANGLO AMERICAN PLC
closed 13 Aug 20195 disclosures · peak 0.74% · first 11 Oct 2017 · last 13 Aug 2019
11 Oct 2017 0.60% · 30 Nov 2017 0.59% · 24 May 2018 0.61% · 5 Apr 2019 0.74% · 13 Aug 2019 0.01%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
JUPITER FUND MANAGEMENT PLC
closed 25 Jul 20174 disclosures · peak 0.50% · first 10 Jul 2017 · last 25 Jul 2017
10 Jul 2017 0.50% · 18 Jul 2017 0.49% · 19 Jul 2017 0.50% · 25 Jul 2017 0.48%
The chain ends here: the register holds no later disclosure, which normally means the position fell back below 0.5%.
INTERNATIONAL CONSOLIDATED AIRLINES GROUP, S.A.
closed 19 Jul 20134 disclosures · peak 0.80% · first 11 Jul 2013 · last 19 Jul 2013
11 Jul 2013 0.58% · 17 Jul 2013 0.80% · 18 Jul 2013 0.53% · 19 Jul 2013 0.41%
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 BG Master Fund PLC short?
- The FCA's named register recorded BG Master Fund PLC against 10 UK companies between 2013 and 2026, across 93 disclosures. 1 position was still open when the register closed on 10 Jul 2026, the largest 0.52% of SPIRENT COMMUNICATIONS PLC.
- 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 BG Master Fund PLC'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.