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Segment Information
 12 Months Ended
Dec. 31, 2023
Segment Reporting [Abstract]  
Segment Information Segment Information
We classify our operations into business segments, based primarily on shared economic characteristics for the nature of the products and services; the nature of the production processes; the type or class of customer for their products and services; the methods used to distribute their products or provide their services; and the nature of the regulatory environment. The Company has five identified business units, which aggregate into three reportable segments within continuing operations, and one within discontinued operations. Luxfer Gas Cylinders forms the Gas Cylinders segment, and Luxfer MEL Technologies and Luxfer Magtech aggregate into the Elektron segment. As of December 31, 2023, it was determined that the Luxfer Graphic Arts reporting segment no longer met the criteria, specifically, similar economic characteristics, to be aggregated within the Elektron segment for 2023. As a result, Luxfer Graphic Arts has been disaggregated from the Elektron segment and is being reported separately as the Graphic Arts segment. The Elektron segment's results for 2022 and 2021 have been adjusted to exclude Graphic Arts' results. Our Superform business unit used to aggregate into the Gas Cylinders segment but is now recognized within discontinued operations. A summary of the operations of the segments within continuing operations is provided below:

Gas Cylinders segment
Our Gas Cylinders segment manufactures and markets specialized highly-engineered cylinders, using composites and aluminum alloys, including pressurized cylinders for use in various applications including self-contained breathing apparatus ('SCBA') for firefighters, containment of oxygen and other medical gases for healthcare, alternative fuel vehicles, and general industrial applications.
Elektron segment                                                Our Elektron segment focuses on specialty materials based primarily on magnesium and zirconium, with key product lines including advanced lightweight magnesium alloys with a variety of uses across a variety of industries; magnesium powders for use in countermeasure flares, as well as heater meals; and high-performance zirconium-based materials and oxides used as catalysts and in the manufacture of advances ceramics, fiber-optic fuel cells, and many other performance products.
Graphic Arts segment
Our Graphic Arts segment provides a full range of pre-sensitized magnesium, copper and zinc plates, along with associated chemicals, for the production of foil-stamping and embossing dies. In addition, non-sensitized polished brass and magnesium plates are also manufactured for computer numerical control ('CNC') engraving. The segment also advises on turnkey engraving operations, complete with etching machines, computer-to-plate ('CtP') machines, exposure units and film setters.
Other
Other, as used below, primarily represents unallocated corporate expense and includes non-service related defined benefit pension cost / credit.
Management monitors the operating results of its reportable segments separately for the purpose of making decisions about resource allocation and performance assessment. Segment performance is evaluated by the chief operating decision maker, the CEO, who is responsible for allocating resources and assessing performance of the operating segments, using adjusted EBITA(1) and adjusted EBITDA, which is defined as segment income, and is based on operating income adjusted for share-based compensation charges; restructuring charges; impairment charges; other charges; acquisitions and disposals costs; and depreciation and amortization.
Unallocated assets and liabilities include those which are held on behalf of the Company and cannot be allocated to a segment, such as taxation, investments, cash, retirement benefits obligations, bank and other loans and holding company assets and liabilities.
Financial information by reportable segment for the years ended December 31 is included in the following summary:
Net SalesAdjusted EBITDA
In millions202320222021202320222021
Gas Cylinders segment$186.4 $183.7 $178.3 $16.7 $12.8 $22.7 
Elektron segment187.1 201.0 155.7 26.6 42.5 34.1 
Graphic Arts segment31.538.740.1(4.5)7.86.6
Consolidated$405.0 $423.4 $374.1 $38.8 $63.1 $63.4 
During 2023 there were $0.7 million sales made between our Elektron segment and Graphic Arts segment (2022: $0.4 million and 2021: nil)

(1) Adjusted EBITA is adjusted EBITDA less depreciation and loss on disposal of property, plant and equipment.
17.    Segment Information (continued)
Depreciation and amortizationRestructuring Charges
In millions202320222021202320222021
Gas Cylinders segment$4.1 $4.8 $5.8 $5.9 $1.7 $5.3 
Elektron segment6.6 6.6 7.4 0.5 0.2 0.9 
Graphic Arts segment2.0 2.22.4— — — 
Consolidated$12.7 $13.6 $15.6 $6.4 $1.9 $6.2 

Total assetsCapital expenditure
In millions20232022202320222021
Gas Cylinders segment$131.0 $133.1 $2.1 $1.2 $1.0 
Elektron segment162.4 172.5 6.1 6.7 6.9 
Graphic Arts segment19.643.91.00.71.0
Other51.3 49.5 — — — 
Discontinued operations7.8 8.1 0.1 — 0.1 
$372.1 $407.1 $9.3 $8.6 $9.0 
`
The following table presents a reconciliation of Adjusted EBITDA to net income from continuing operations:
In millions202320222021
Adjusted EBITDA$38.8 $63.1 $63.4 
Share-based compensation charges(2.8)(2.5)(2.8)
Depreciation and amortization(12.7)(13.6)(15.6)
Restructuring charges(6.4)(1.9)(6.2)
Impairment charges(12.7)— — 
Acquisition and disposal costs— (0.3)(1.5)
Other charges — — (1.1)
Defined benefits pension (charge) / credit(7.6)0.1 2.3 
Interest expense, net(6.3)(3.9)(3.1)
Credit / (provision) for taxes7.1 (9.0)(5.4)
Net income from continuing operations$(2.6)$32.0 $30.0 
The following tables present certain geographic information by geographic region for the years ended December 31:
Net Sales(1)
202320222021
$MPercent$MPercent$MPercent
United States$243.1 60.0 %$243.3 57.5 %$207.8 55.6 %
U.K.19.7 4.9 %20.6 4.9 %24.4 6.6 %
Japan19.3 4.8 %18.2 4.3 %9.8 2.6 %
Germany19.2 4.7 %19.2 4.5 %17.7 4.7 %
Canada11.2 2.8 %12.8 3.0 %11.4 3.0 %
Top five countries$312.5 77.2 %$314.1 74.2 %$271.1 72.5 %
Rest of Europe47.5 11.7 %49.4 11.7 %49.3 13.2 %
Asia Pacific28.0 6.9 %39.1 9.2 %43.9 11.7 %
Other (2)
17.0 4.2 %20.8 4.9 %9.8 2.6 %
$405.0 $423.4 $374.1 
(1) Net sales are based on the geographic destination of sale.
(2) Other includes South America, Latin America and Brazil.
17.    Segment Information (continued)

Property, plant and equipment, net
In millions20232022
United States$26.8 $41.6 
United Kingdom32.8 32.0 
Canada2.92.8
Rest of Europe1.0 1.0 
Asia Pacific0.3 0.3 
$63.8 $77.7 
(1) Net sales are based on the geographic destination of sale.
(2) Other includes South America, Latin America and Brazil.