Spath:
If the Lyceum Tavern sells peanuts they'll have to be their own brand because it's a Sam Smith's pub, where they only sell their own products. (There's no Guinness, Budweiser or anything else. All the beers, including their excellent wheat beer, are from their own brewery. All the wines and spirits are from their own vintners so, for example, there's no Famous Grouse or Jack Daniels. I seem to recall that even their crisps are 'own label' products. However they stick to the wonderful Sam Smith's policy of charging the same prices throughout the country, making their pubs the cheapest in London).
A pub with only one draught beer probably wouldn't attract me to it but, if it's an excellent pint, it might still be OK. (I can only drink one beer at a time!)