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Basis of Preparation (Details)
£ in Millions
6 Months Ended
Jun. 30, 2021
GBP (£)
Basis of Preparation (Details) [Line Items]  
Net assets £ 306.3
Cash balance 60.3
Additional capital £ 836.0
Sale of revenue, percentage 100.00%
Customer Relationships [Member] | Bottom of Range [Member]  
Basis of Preparation (Details) [Line Items]  
Estimated useful lives 2 years
Customer Relationships [Member] | Top of Range [Member]  
Basis of Preparation (Details) [Line Items]  
Estimated useful lives 6 years
Brand Name [Member]  
Basis of Preparation (Details) [Line Items]  
Estimated useful lives 3 years