The Service Updates page on the UK is really helpful so that you can see if there are any glitches in the system overnight. Sadly, I have been watching an ever-growing list of Delivery Offices which are not operating to full capacity due to sickness & staff shortages. This was the state of play for 12 January 2022 - if you are in these areas, or posting to these areas, there will no doubt be a delay:
Altens DO (AB10 to AB12 and AB35)
Amesbury (SP3 and SP4)
Banff DO (AB44 and AB45
Bearsden DO (G61)
Bicester DO (OX25 to OX27)
Bishopbriggs DO (G64)
Bredbury DO (SK6)
Bridge Of Don DO (AB22 and AB23)
Bristol South DO (BS3, BS13 and BS41)
Buckingham DO (MK18)
Burgess Hill DO (BN6 and RH15)
Caldicot DO (NP26)
Camberwell (SE5)
Cardiff West DO (CF5)
Chelmsford DO (CM1 to CM3)
Cramlington DO (NE23)
Cricklewood DO (NW2)
East Dulwich DO (SE22)
East Kilbride DO (G74, G75 and G79)
Erskine DO (PA7 and PA8)
Finchley Church End DO (N3)
Finsbury Park DO (N4)
Glasgow G32 DO
Glasgow G41, G42 and G45 DO
Glasgow G43 and G46 DO
Golders Green DO (NW11)
Hanwell (W7)
Harlow DO (CM17 to CM20 and CM92)
Harold Hill DO (RM3)
Heaton DO (NE6 and NE7)
Herne Hill DO (SE24)
Holloway DO (N7)
Hornsey DO (N8)
Hove DO (BN3 and BN52)
Invergordon DO (IV17 and IV18)
Islington DO (N1 and N1C)
Lancing (BN15)
Lark Lane DO (L17)
Larkhall DO (ML9 and ML10)
Maida Hill DO (W9)
Manchester South West DO (M15, M16 and M32)
Maryport DO (CA15)
Monmouth DO (NP25)
Motherwell DO (ML1)
Muswell Hill DO (N10)
New Ferry DO (CH32, CH62 and CH63)
Newport East DO (NP18 and NP19)
Newton Mearns DO (G77)
Northwich DO (CW8 and CW9)
Oxted DO (RH8)
Perth DO (PH1. PH2 and PH14)
Rayleigh DO (SS6)
Redcar DO (TS10 and TS11)
Rotherhithe DO (SE16)
Rottingdean DO (BN2 and BN51)
Sheffield North East DO (S5)
Shepshed DO (LE12)
Skelmersdale DO (WN8)
South Croydon DO (CR2)
Speke DO (L24)
St. Helens DO (WA9 to WA11)
Swindon West DO (SN5)
Sydenham DO (SE26)
Thame DO (OX9 and OX39)
The Hyde DO (NW9)
Uddingston DO (G71)
Upminster DO (RM14)
Upper Holloway DO (N19)
Upton DO (CH30 and CH39)
Wallasey DO (CH27, CH44 and CH45)
Wantage DO (OX12)
Ware DO (SG9 to SG12)
Warrington DO (WA1, WA2, WA4 and WA5)
West Norwood DO (SE27)
West Wickham DO (BR4)
Willesden DO (NW10 and NW26)
Wootton Bassett DO (SN4 and SN16)
You can find the daily Royal Mail Service Updates here https://personal.help.royalmail.com/...ail/a_id/12556
Good luck everyone, and stay safe