Well, on food - Tesco and Sainsburys will deliver from their websites, and ocado.com for waitrose has been mentioned.
Pro - food comes to you and you only get what you want (not random hungry puchases).
Con - you have to be in when they arrive, unsure what the windows are.
Laundry - I was living in NE London at the time (about 3 years ago) so I used http://www.theironingboard.com/
There must be more of these around in other parts of town.
Pro - somebody washes, dries, folds and (optionally) irons your clothes.
Con - ????
(OK so it costs money instead of time, what you think is good value in this department is probably very subjective, and you have to be there to accept delivery, but they did deliver in the evenings :)
Cleaners are an odd one because you're allowing someone access to your property, often when you're not there. It may be best to find a trustworthy cleaner by word of mouth.
We use http://www.abelandcole.co.uk for food. They do deliver once a week, but with some planning and reoccuring orders you can pretty much automate your food supplies. Also they don't require you to be in - you can ask them to leave the boxes somewhere "safe" (behind a dust bin). Not ideal, and depends where you live, but we never had any problems in the last 4-5 years... Also they typically deliver quite early 5/6 am.
Customer support is great. No monthly subscription.
Cons: bit pricey, but I found the stuff to be of a better quality than in large supermarkets - they try really hard to be organic and stuff like that.
Tesco and Sainsbury's have 1 or 2 hour delivery windows and different charges (£10 or under) depending on day and time of day. Tuesday/Wednesday evenings (7-9pm) tend to be free for orders over £100 with Sainsbury's. We tend to do monthly deliveries including lots of the heavy/bulky items or non-perishables (tins, drinks, nappies). We then pick up the fresh items every day or two from local supermarkets/grocers.
Cleaners are £8-£10/hour (in SW London anyway), ours takes 2.5 hours for our 3 bed flat. They'll often do ironing too.
Couldn't ever go back to living without a washing machine though!
Also for the food thing (and I'm sure most folks in the uk know this one already) just-eat.co.uk will tell you all your local delivery options and take your order/payment too. It's a great way to get fat.
* How did you go about finding the farm and acquiring it?
* How did you ensure you were paying a fair price?
* What about the legal side of things?
* Are you doing this remotely, or from within Colombia?
As a coffee drinker (and as someone who has visited the golden triangle) this is the most fun answer here!