If your visa was put in your married name (which mine was), then carry your marriage certificate with you when you travel and show it when you show your ticket - that's what I had to do.
Now, since you were denied once, be prepared to be stopped (for a short bit) at the airport when you get into London. Don't panic. I was not denied entry when I came last year without a visa (but I got in by the grace of God and the skin of my teeth, you may have read my story on here before...anyway), if they have ANYTHING on you on record like that (as in: being questioned, held, or denied entry) they will check it out, because there will be a "mark" on you. Again, don't panic, stay calm. They will ask you where your husband is and if he is travelling with you. Just tell them that he is there to pick you up and don't act guilty - because now you're are not. You have your visa, you have entry clearance, so just stay calm, smile, and answer their questions politely.
Don't worry... I know, easier said, but really don't worry. ~~hugs and congrats¬¬