Browsing through eBay and I found a couple of sets of strings by the same company, Bryce. After reading the front packaging I got to wondering " I wonder what's the difference". Then I realised that at about £6 a packet (remember you probably get what you pay for) I REALLY DON'T CARE ENOUGH TO OPEN THE AD.
https://www.ebay.co.uk/itm/Electric-Bass-Guitar-4-String-Set-Light-040-Nickel-Alloy-by-Bryce/263440294745?epid=17013180526&hash=item3d5643e359:g:zLkAAOSwgsxaXfod
https://www.ebay.co.uk/itm/Electric-Bass-Guitar-4-String-Set-Light-040-Nickel-Alloy-by-Bryce/263440294792?epid=20013180624&hash=item3d5643e388:g:5iYAAOSwu6taXfof
Anybody else?