[andyalfa]

Any ideas where I might be able to get one in the UK? The only place I've found that lists it is www.hifiheadphones.co.uk and they show it as "out of stock".
 
If not,could anyone recommend a similarly priced alternative?

 

[kmhaynes]

Pretty sure the T4 is no longer in production, so the only place you will find is probably used -- some odd place out there might have a new one on stock.
 
Check your PM!