Right Jimmy, first of all, put out a request on Facebook or use Google. You are looking for lads who advertise " Garden Clearance". Try to pick a reputable one, that won't tip the resultant waste three streets away as they leave.
Let me tell you a story about machinery, and a man with a lot to learn. Once upon a time, I was made redundant, and having set aside a sum of money for the purpose, I went to a reputable Stihl dealer to buy a Kombi unit. Negotiations went well, until the salesman asked me what I intended to do with the machine.
" Why, earn money of course "says I.
Salesman immediately refuses to sell me the machine. Informs me that despite bearing the legend of a Professional brand, this is the Domestic model, and not designed for me to beat the living daylights out of it in a concerted fashion. I will thus break it quickly, and come back and yell at him for selling me something unfit for purpose. He then sold me the Pro model, for £100 more, but he was totally and absolutely right.
Thus began a relationship with that dealer still going today.
Hawksmoor, Titan and other brands sold by Screwfix, Toolstation, B&Q and the rest are one of two things.
1) A lottery. A good one will last far longer than it has a right to do, and repay you well. I had a £20 9" angle grinder which endured years of abuse until I got a Stihlsaw. A bad one will refuse to start out of the box/second time you use it. The reviews on the sites will reflect this.
2) Disposable. Bought for one off jobs which you will never do again, and as long as it last long enough to finish the task, you've saved hundreds of pounds over hiring a professional, or buying an expensive piece of kit. Tears come to my eyes when I realise that one of my Kombi tools has cost me a thousand, yes a thousand pounds. Love it to bits though. ( And for those who haven't done the sums yet, in round numbers, just short of £500 for the big battery Kombi, £350 for the battery in it, and £150 for the bit you then screwed into it ).
Believe me, if I could get away with £150 from Toolstation, I would do. Draw your own conclusions.