Collapses — biggest profit reversals down

Profit was rising, then turned and fell — ranked by the depth of the drop across three filed years · 1,173 qualifying · snapshot 2026-10-01

# Company Industry Profit swingLatest PBT
01 THERMO FISHER SCIENTIFIC POWDER US HOLDINGS LIMITED Unclassified £22.74B £-1,643,162,894
02 ANGLO AMERICAN INVESTMENTS (UK) LIMITED Holding company for mining group Industrials £4.11B £-4,041,017,988
03 WM MORRISON SUPERMARKETS LIMITED Private equity-backed supermarket chain Consumer Staples £2.87B £-166,000,000
04 TELEFONICA O2 HOLDINGS LIMITED Telecommunications £2.13B £-1,653,000,000
05 PPD INTERNATIONAL INVESTMENTS LIMITED Industrials £1.03B £-121,187,000
06 WEYBRIGHT UK 1 LIMITED Industrials £955M £-2,288,638,386
07 MICRO FOCUS IP DEVELOPMENT LIMITED Software intellectual property subsidiary Technology £929M £-128,318,016
08 LSEGH (LUXEMBOURG) LIMITED Industrials £625M £-237,066,419
09 UK INTERCO 1 LIMITED Industrials £612M £-149,285,714
10 UK LSEG FINANCING 1 LIMITED Industrials £541M £-165,627,458
11 DRAX CORPORATE LIMITED Industrials £481M £-352,700,000
12 ARRIS GLOBAL LTD. Telecommunications equipment manufacturer Telecommunications £404M £-10,643,107
13 VERTIV COMPANY GROUP LIMITED Industrials £394M £-27,936,000
14 EDF ENERGY LIMITED Integrated energy generator and supplier Utilities £364M £-38,000,000
15 THE OFFICE GROUP LIMITED Flexible workspace provider Consumer Discretionary £358M £-52,429,000
16 WESLEYAN ASSURANCE SOCIETY Financials £345M £-219,000,000
17 LADBROKES CORAL GROUP LIMITED Consumer Discretionary £320M £-78,500,000
18 THE OFFICE GROUP HOLDINGS LIMITED Industrials £315M £-1,055,000
19 AB INBEV BREWING COMPANY (APAC) LIMITED Industrials £286M £-5,447,344,712
20 CB-SDG LIMITED Holdco for Six Degrees Group Industrials £270M £-70,139,000
21 RIO TINTO FINANCE PLC Financials £249M £-10,325,046
22 MAIDMETAL LIMITED Entertainment holding company Consumer Discretionary £219M £-1,234,189
23 EG RETAIL SERVICES LIMITED Consumer Discretionary £213M £-859,000
24 HOLMES FUNDING LIMITED Mortgage securitisation funding vehicle Financials £211M £-68,933,000
25 CYRUS ONE UK LIMITED Technology £199M £-4,546,886

All figures from each company's latest filed Companies House accounts; detailed filers only, with implausible outliers and scale artifacts excluded. Filed accounts lag the present by roughly 12–24 months, and group-vs-parent scope changes can move a figure between filings. Banks and insurers that don't report a turnover line are under-represented on the turnover-based boards.