That would suggest G-BJCU then.
Which became EI-CJE with Ryanair. I last flew it in April '04. Ryanair were by then running down the 732 fleet and replacing them with 738s. All gone by mid December '05. I think the last of the ex-Brit ones to go was EI-CJG (ex G-BGYK ),which I last flew in October '05.