Students also don't always get the accommodation the ask for. A system of applying for many and then being allocated which is what a lot of unis do might actually end up in more expensive accommodation.
Some examples - two RG, one RG +, one ordinary :
Birmingham
Maple Bank is cheapest . Shared bathroom is under 5 k. Aitken, (shred facilities)where my DS was, is 6k. Cheapest en suite is 7.5 k
However, his year 2 and 3 accommodation is well over 7k because of 51 week lets.
Bath
Does have some self catered shared facilities at under 4k. I know that many students have struggled to secure on campus accommodation there and been put in far more expensive halls than they wanted (most are much more pricy than 4k). Second year accommodation is very expensive.
Lincoln
The cheapest is listed as 'from' 4.4 k
DS's old accommodation which was under 5.5k a few years ago is now 'from' 7,682 because they have increased let length to 46 weeks. All their accommodation other than Lincoln Courts has gone up a lot since they expanded.
Second year accommodation at Lincoln is, however, plentiful and good VFM
York:
Cheapest if you ignore Halifax which is an odd place is just under 6k in Vanbrugh. They have price bands and there are only two available places in Band 1. The rest are all north of 7k.
Second year accommodation very expensive from what I hear.