Royal Mail have advised that many areas are subject to delivery delays due to local issues such as COVID-related self isolation, high levels of sick absence, resourcing, or other local factors. Customers should expect delays in the following postcode areas:
     - Amesbury (SP3 and SP4) 
- Bicester DO (OX25 to OX27) 
- Camberwell (SE5) 
- Chelmsford DO (CM1 to CM3) 
- Chipping Norton DO (OX7) 
- Cricklewood DO (NW2) 
- Croydon DO (CR0 and CR9) 
- East Dulwich DO (SE22) 
- Erskine DO (PA7 and PA8) 
- Gerrards Cross DO (SL9) 
- Greenwich DO (SE10) 
- Hanwell (W7) 
- Havant DO (PO9 to 10) 
- Hendon (NW4) 
- Herne Hill DO (SE24) 
- Holloway DO (N7) 
- Hornsey DO (N8) 
- Lancing (BN15) 
- Manchester South West DO (M15, M16 and M32) 
- Norwood DO (SE19) 
- Oxted DO (RH8) 
- Peacehaven DO (BN10) 
- Rottingdean DO (BN2 and BN51) 
- South Croydon DO (CR2) 
- St. Helens DO (WA9 to WA11) 
- Sydenham DO (SE26) 
- The Hyde DO (NW9) 
- Upper Holloway DO (N19) 
- Upton DO (CH30 and CH39) 
- Upminster DO (RM14) 
- Wantage DO (OX12) 
- Ware DO (SG9 to SG12) 
- West Wickham DO (BR4) 
- Willesden DO (NW10 and NW26)