2020  | 
 2019  | 
|
 £ 000  | 
 £ 000  | 
|
 Covid 19 stock  | 
 71  | 
 -  | 
 Raw materials  | 
 229  | 
 319  | 
 Finished goods  | 
 1,490  | 
 1,594  | 
 1,790  | 
 1,913  | 
 2020  | 
 2020  | 
|
 £ 000  | 
 £ 000  | 
|
 Rent and service charges receivable  | 
 4,216  | 
 4,437  | 
 Less : provision for bad and doubtful debts  | 
 ( 2,266 )  | 
 ( 2,197 )  | 
 Net rent arrears  | 
 1,950  | 
 2,240  |