The subject is slowly dying imo,
The sixth Form college I was at closed their AS/A level D&T and 3-D art courses in 2013 for exactly the reasons you gave convert although there were other issues as well. Recruiting too few students, maintenance costs going through the roof and the cost of materials was becoming prohibitive. I realised that it was becoming unviable when our heat treatment area failed its annual inspection/ maintenance and was told there was no money to get it fixed/ upgraded. Which made teaching the two jewellery courses I ran a bit tricky mid year not to mention the Product Design A level with the students halfway through their second year with projects already decided.
The same had also happened to both our other local 6th form colleges a year or two before, although some independent and 11-18 schools did offer A level within 10 miles or so.