For me, Royal Mail whenever possible, Parcelforce if not. Also, I use Anyvan & select positively reviewed men in vans when the couriers / post becomes too expensive. I absolutely, positively avoid Yodel & myHermes due to repeated bad experiences with fragile goods.
Mana Acoustics Racks / Bright Star IsoNodes Decoupling >> Allo DigiOne Player >> Pedja Rogic's Audial Model S DAC + Pioneer PL-71 turntable / Vista Audio phono-1 mk II / Denon PCL-5 headshell / Reson Reca >> LFD DLS >> LFD PA2M (SE) >> Royd RR3s.