In response to Northern Country Boy I guess its more of an estimation of capability rather than them being solid at E4 and looking to move up.
It might be worth starting a bit further down and working upwards.
How about:Inaccessible Inas Rock well protected and pumpyNettle Wine Cratcliffe Good gear then a brilliant boulder prob with a very safe fallMoolah and New Mediterranean Rivelin Place one set of bomber gear (several big RPs and a friend 0), down climb and get to do two safe bouldery routes off it
Go to the Roost in Lancs. 2 E5s there that are a piece of piss and they've got quite a few pegs and aren't reachy.
One of the more obscure E5s at Ina's might be suitable in a highballable way
entropy's jaw is bold. i went for the solo with good pads and great spotters.