A little wary of these units as the first ones simply fooled the pump it was low pressure by a simple variable resistor so supplied more pressure but this was across the rpm scale even at tick over so not good for the engine nor fuel ecc
which company in York was it? ukchiptuning by any chance? if so go onto their website & take a look at their dealer location map. Seach for Huddersfield then zoom in on map. There's a mobile remap company called Auto Solutions!
Give them a call, they'll definitely be cheaper, will come to you & like I said are authorised agent for ukchiptuning so the same spec & gaurantees etc!