I started of DL with Bristol, but after 18 months and only being 1/2 way through Mod 1, I gave up and went full time at London Met (this was in no way a reflection on Bristol GS, merely my own personal circumstances as explained below). It was the best decision I ever made. I'm now just about to finish the IR.
I had always wanted to do residential as I knew I was lazy when it came to self study but didn't think I could afford to take the time off work, until I had a chat with a pilot who said to take the hit on the loss of earnings, get them done then move on, the quicker I did, the quicker I'd be flying and the quicker I'd make back the money I'd lost through higher wages.
If only I'd made the decision earlier, I wouldn't now be qualifying in the worst economic downturn for years, and could have been flying heavy metal 18 months earlier.
I was not disciplined enough to do self study, combined with working in Aviation and constantly being told by pilots it is all a load of rubbish you don't need to know, it was hard to pick up those books and try and take it all in.
At London Met, I was all done in 8 months with all 14 passed. They really guide you through what is really important to know, and what is just nice to know.
If your business is internet based, London Met have several computer labs you could possibly use during breaks depending on the nature of the business of course. You get 15 mins in the morning, 45mins -1hour for lunch and 15 mins in the afternoon and on 99% of days you are out by 4, some days it's even earlier and in the 1-2 weeks before exmas you don't need to go in at all if you don't want to, you can revise at home.