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Comebacks — biggest profit reversals up

Profit was falling, then turned and rose again — ranked by the depth of the V across three filed years · 800 qualifying · snapshot 2026-07-01

# Company Industry Profit swingLatest PBT
01 ISOSCELES DM 123 LIMITED Holdco for a telecommunications group Telecommunications £314M £126M
02 INNOSPEC INTERNATIONAL LIMITED Specialty chemicals group subsidiary Industrials £223M £305M
03 WORLDWIDE HEALTHCARE TRUST PLC Financials £220M £10M
04 THERMO FISHER SCIENTIFIC (OLI) UK LIMITED Unclassified £176M £355M
05 AZENCO4 LIMITED AstraZeneca group support entity Industrials £171M £645M
06 THE BIOTECH GROWTH TRUST PLC Financials £157M £131M
07 JPMORGAN AMERICAN INVESTMENT TRUST PLC Listed North American investment trust Financials £156M £63M
08 CAPELLA UK BIDCO 1 LIMITED Student accommodation holding company Real Estate £136M £101M
09 RENTOKIL INITIAL 1927 PLC Industrials £118M £84M
10 BOOTS PROPERTIES LIMITED Retail group property holding company Real Estate £109M £124M
11 LAND SECURITIES (FINANCE) LIMITED Finance subsidiary for commercial REIT Financials £105M £34M
12 RIVER ISLAND HOLDINGS LIMITED Consumer Discretionary £92M £12M
13 CH2M HILL EUROPE LIMITED Engineering services subsidiary Industrials £91M £38M
14 BOOTS PROPCO B LIMITED Real Estate £88M £114M
15 APAC HOLDCO LIMITED Retail group holding company Consumer Discretionary £82M £12M
16 AFC BOURNEMOUTH LIMITED Consumer Discretionary £81M £15M
17 COSTA LIMITED Multinational coffeehouse chain Consumer Staples £75M £65M
18 WPG FINANCE LIMITED Financials £73M £55M
19 PRET A MANGER (EUROPE) LIMITED Consumer Staples £66M £11M
20 ECOM AGROTRADE LIMITED Consumer Discretionary £59M £31M
21 VERIZON UK FINANCING LIMITED Consumer Discretionary £57M £361M
22 BLACKROCK LATIN AMERICAN INVESTMENT TRUST PLC Financials £56M £47M
23 SANFORD C. BERNSTEIN LIMITED Institutional research and brokerage firm Industrials £53M £45M
24 THE LIVERPOOL FOOTBALL CLUB AND ATHLETIC GROUNDS LIMITED Professional football club Consumer Discretionary £48M £15M
25 ENERPAC ENERGY LIMITED Industrials £47M £13M

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.