It’s only coilovers on the front, rears are separate springs and shocks. Are you wanting to change springs and shocks on all 4 corners? If so what are you wanting to do, lower, raise, OEM, comfort….? Or something just to get you through the MOT or long term upgrade? You need to be careful with any changes or you could ruin the ride and handling or end up with a saggy rear end (never a good look!!).
I’d suggest speaking to one of the specialists on the forum such as CRS or Bognor to see what the options are. They often have nearly new OEM stuff that’s been upgraded that may suit you.