Cucumber for commercial growers has been hybridised to give yields with no taste. It requires special conditions, usually hydroponics, to make viable at 80p a cucumber and is tasteless, water laden, and only last about 2 days once the plastic seal is broken. It is a non product TC44, you are right. I grow a couple of cucumber plants every summer and the taste and texture is as it should be. Don't get us started on Tomatoes, Courgettes, Potatoes, ... Even the Jersey Royals have lost their shape and distinctive flavour. Rhuubarb to the intensive farming methods.
P.S. Wat till Alava shows up. He is an expert.