Disclosure Of Earnings Per Share [Text Block]

HEADLAM GROUP PLC - Filing #1587527

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Disclosure of earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Earnings per share [abstract]
Earnings per share [line items]
Basic earnings per share [abstract]
Basic earnings (loss) per share from continuing operations	—	0.315	—	—	—	—	—	—	0.235	—	0.207	—	—	0.137	—	—	—	—	—	—
Basic earnings (loss) per share from discontinued operations	—	0.002	—	—	—	—	—	—	0.053	—	0.034	—	—	0.005	—	—	—	—	—	—
Diluted earnings per share [abstract]
Diluted earnings (loss) per share from continuing operations	—	0.311	—	—	—	—	—	—	0.232	—	0.207	—	—	0.137	—	—	—	—	—	—
Diluted earnings (loss) per share from discontinued operations	—	0.002	—	—	—	—	—	—	0.052	—	0.034	—	—	0.005	—	—	—	—	—	—
Adjustments to reconcile profit (loss) to numerator used in calculating earnings per share [abstract]
Profit (loss), attributable to owners of parent	– GBP	26,700,000 GBP	2,300,000 GBP	– GBP	– GBP	– GBP	– GBP	– GBP	24,400,000 GBP	24,400,000 GBP	20,300,000 GBP	– GBP	– GBP	12,000,000 GBP	32,300,000 GBP	20,300,000 GBP	– GBP	– GBP	– GBP	– GBP
Disclosure of depositary receipts [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of depositary receipts [abstract]
Disclosure of depositary receipts [line items]