Yep. Type out absolutely everything you will clean for your price, from skirtings to wall switches and then giv your S/c for 1 builders clean + 1 sparkle because believe me you will be doing more than 1 clean after the trades are let loose in there. Enclose your insurance docs plus Method & Risk assessments, Vat reg, and UTR no. Think thats about it, oh and Companty Reg no, Bank details and ask them what their payment terms are. Don't forget they stop 20% CIS tax as well. Best of Luck.
Denise