Good quality long guarantee but not cheap Jackson fencing outside chester they have a website. Had a large gate and pergola and fence trellis of them years ago and was impressed.
Can order online and they do deliver.www.jacksons-fencing.co.uk
Locally in Newton/Frankby there is a guy next door to Larton Farm (hill croft Fencing?)0151 625 7229. Have had trellis of him and prices are ok. He can make things to your sizes.