I'll refrain from mentioning something about the quality of the boards - very many short ones! - and advice you to definitely check if that board near the radiator-pipe still has room to move - it is known to snap the pipe!
dont hold back, think we paid £28 sq mtr from woodfloor warehouse Belfast, yes there still is approx 1 cm gap each side off pipe. Fitter meant to be out at the weekend, he then cancelled and promised Monday night, now hes not answering his phone, so IM THINKING SMALL CLAIMS AGAINT THIS W****R and gettin a different floor contractor, missus just give birth y.day morning so could be doing without this ffs