Your wife is your sponsor, so you do not need an employer sponsor. You can work only after getting EAD.
This is one of the reasons to decide between-CR-1/IR-1 visa or K-3. K-3 needs EAD to work, CR-1/IR-1 results in green-card upon entry and can immediately work.
CR-1/IR-1 takes not much longer to get from the Embassy in London verses the K-3, and costs less when considering adjustment of status from K-3 to green-card ($1010)
Also if you have K-3 as your profile indicates, why are you filing I-130?

US

YOU
http://www.visajourney.com/timeline/profile.php?id=42621