If you wondered why they smiled when you ordered the scampi in a basket for around £10 in the pub next door to the museum, I can tell you why. Premade English pub meals can now be bought wholesale for £ 1.22, which allows for a hefty markup.
It is the Morning Advertiser that cheerfully tells us that food and drink wholesaler Booker has slashed the price of five different meals. Pubs can sell meals for two punds fifty and still have a 100% markup – which can compete with Wetherspoons pices.
The Wiktionary informs me that the slang use of grub for food, first recorded 1659, has been linked with birds eating grubs. No wonder. I’d assume you won’t get much beyond starch and saturated fat at that price.