WW2 Borough Of Lambeth Civil Defence 'Orders To Parties' Form

An interesting document I had not come across before. This "Orders To Parties" form from the Lambeth Civil Defence area in London covers a lot of information about an incident.

I've tried to decipher the abbreviations but one or two are not obvious:

SP - Stretcher Party (term used in London for First Aid Party)
CDP - not sure on this one - something Party
AMB - Ambulance
REP - Repair Squads (gas, water, electricity, sewage, telephone etc)
MU - Mobile Unit
R - Rescue
MC - ? 
DCP - Decontamination Party

WW2 Borough Of Lambeth Civil Defence 'Orders To Parties' Form