Hi chaps, thanks for the replies and the emails.
The bearings I bought were from Amazon in 2013 by a company called Uni-fit, at a cost of about £9 quid inc postage. https://www.amazon.co.uk/dp/B003FTGYHG/ref=pe_217191_31005151_3p_M3T1_dp_1 There's a review on there, but it wasn't me, and now...