I found the album on Spotify and transcribed this. There are a few gaps where I couldn't understand. You can hear a somewhat abbreviated version performed by some amateurs at YouTube.
TESCO SAVES As sung by Fascinating Aida on their album "Silver Jubilee" (2010)
Oh, there's a five letter word that brings salvation. (Yeah, salvation!) Yes, there's a five-letter word to bring you peace of mind. So let the whole congregation Raise their hearts in exultation. For now we see where once we all were blind. (We were blind!) Five little letters bringin' hope to all mankind. Let me hear you say T! (T!) Let me hear you say E! (E!) Let me hear you say S! (S!) C! (C!) O! (O!) Tesco saves! (Tesco saves!) Tesco saves! (Tesco saves!) Jesus saves but Tesco saves you more! (Saves you more!) The special... 'Cause man can't live by bread alone, Even though they bake it all in store. (Bake in store!) You'll smell it as you glide in through the automatic door. Come on in! Come on in! Why wait until you die to go to heaven (heaven knows) When paradise awaits you in those well-stocked aisles? From Australian cream from Devon ... displayed in ... eleven. Their pharmacist will help you with your piles. They sell unattractive clothing in a range of ugly styles. Tesco saves! (Tesco saves!) Tesco saves! (Tesco saves!) Jesus saves but Tesco saves you more! (Saves you more!) The good Lord may deliver you, But Tesco can deliver too. ... is all you've ever dreamed. You'll truly know redemption when your vouchers are redeemed. Within these walls you'll see such revelations. You will find the Tesco sign is just a Holy Grail, And in the coming by-and-by, From their web site in the sky, You'll marvel at their range of goods on sale. So sinners, come and join the pilgrims on the Tesco trail. Tesco saves! (Tesco saves!) Tesco saves! (Tesco saves!) Jesus saves but Tesco saves you more (more, more), The Mount of Olives, the Fatted Calf, Some DVDs to make you laugh, And don't ignore their range of gourmet dishes. (Gourmet!) You'll find them in the bakery between the loaves and fishes. Hallelu! Hallelujah! Go down, Moses! Tesco saves! (Tesco saves!) Tesco saves! (Tesco saves!) Jesus saves but Tesco saves you more! (Saves you more!) There's plenty of endangered cod, Luscious racks of Lamb of God. Don't forget insurance for your budgie. Then go and grab yourself a bumper pack of something fudgy.
[SPOKEN] I feel the spirit, sister! Yes the sprit of ... I feel the spirit too, sister! Will you take over from me at the cee-lestial organ? (I will, sister!) Brethren, let us embrace the Tesco way of life, For they can supply gas, electricity, mobile phone, legal advice, internet and banking. Thou shalt brave the world omnipotent, And wish them success with their brand new store in Nanking. Thou shalt be inexorably drawn towards the expensive items By the teams of retail psychologists Who are paid shitloads to manipulate your psyche. Thou shalt not worship at the shrines of Aldi and Lidl, For yea, verily, they are false gods. (False gods, false gods!) What are they, my sisters? (False gods!) What are they, my brothers and sisters? (False gods!) Say it loud! (False gods!) Say it louder! (False gods!) And anyways, their carrying bags are ... Thou shalt purchase strawberries in winter, Nuked tomatoes all the way from Californ-eye-ay. And apples—apples, apples, apples—that have spent a year in refrigeration. Yea, thou shalt also purchase bags of chlorine-washed salad leaves, Especially prepared for you In countries where people are dying of starvation. Thou shalt shun the independent record store And use the Tesco web site to stream your favorite songs. Thou shalt pop in for a pint o' milk And somehow end up spending forty-seven pounds. I have been moved. I have been moved. Now you move!
[SINGING] Tesco saves! (Tesco saves!) Tesco saves! (Tesco saves!) Jesus saves but Tesco saves you more! (More and more each day!) Their stores are found both near and far, Lots of space to park your car. Prime locations! Sites, they sure can pick 'em. (They pick 'em.) And sometimes they collapse on railway tracks like in High Wycombe. Tesco saves ... Tesco saves you more ... So all you chil'en, fight the fight. Ye unbelievers, see the light. It's time to lift thine eyes unto the stars (unto the stars) 'Cause next month Tesco opens up its flagship store on Mars. ... Tesco saves you more Yeah, Lord!