You missed the boat a bit last month, as there were some very good deals around the Black Friday sales.
The best I could find at present is the following list from Currys (of all places).
https://www.currys.co.uk/gbuk/nintendo-tv-and-home-entertainment/gaming/gaming-consoles/430_3959_31710_1108_xx/xx-criteria.html?ntid=B~m~Nintendo
The console itself tends to go around £260-£280, with the main games you mentioned between £40-£50 each so these seem ok.
Alternatively, try a website called Hot UK Deals, which have people posting up deals found either instore or online. Might be worth looking there and seeing what newer Switch deals are around.