A buyer and retailer of surplus electronics and various other items.
Their only real connection to the Sam is that for a while they had a stock of Sam power supplies, probably sourced from Search: “SamCo” when it went into liquidation, which they sold for a fiver. (The standard price from West Coast Computers etc. was twenty-five pounds).
Where are they now?
Still going, it seems (or at least, the company with that name now, appears to be doing the same trade as in the nineties).