The best and quickest way imo is finding someone who's selling work near you. If you don't have cash there to buy it then still give him a phone and tell him what you can do. Don't be unrealistic and tell them £2000 a month because the round takes that in. Give them a number that you can comfortably afford each week that's not putting you under pressure to get it.
If you have some cash then do what I do, il never hand over anymore than half of what the persons asking. They get the other half once I've done the run to make sure everything is how it's been sold. When people are selling the house that stopped paying them 9 months ago gets sold into the run to bump up the price, I then take things like that off the final price, if they have told me it's all due and was done 4 weeks ago and I turn up and there filthy and he's not been for 4 months that then gets taken into account when paying what's left of the run.
If you have some cash then do what I do, il never hand over anymore than half of what the persons asking. They get the other half once I've done the run to make sure everything is how it's been sold. When people are selling the house that stopped paying them 9 months ago gets sold into the run to bump up the price, I then take things like that off the final price, if they have told me it's all due and was done 4 weeks ago and I turn up and there filthy and he's not been for 4 months that then gets taken into account when paying what's left of the run.