Wife as shopping next door so I went into Bikehut and asked for a Ext Deore BB. After much searching (and asking a co-worker) he produced a UN54. After pointing out it wasn't and external one - he consulted his manager. You can order on the net but we don't keep them in stock.
Pity that they don't seam to give their staff decent training nor stock basic parts for many of the bikes they have in store. Bike wise they seam to have lots of nice stuff - from the Boardman range to even their own range - they had Carrera 650b hardtail on display ffs!