I reckon that would need a lot of work to make it useable. Looks like it has stood for a long while. No clear sign of brake cables, lots of rust. Deck looks about 10x5 but in possibly not the original one from the trailer judging by the steel on the front and just in front of the axle. . If you want to put in the work, then £100 is practically nothing. But I'd say you would put £600 plus into it, so save your money and buy a decent one.... If it had a good hydratow or avonride hitch its worth a coupe of quid...