How much gbp would i need for spending money for 3 days in paris?

paris is one of the most expensive cities on the planet ..if you have hotel room booked ..allow £150 a day for travel .food ..entry fees etc ..buy a paris bus pass ..i know paris very well..was there a few months back with grandkids ..best way to get there is eurostar ....if you have a modern phone ..you can get an app that allows you to pick up .electric bikes and scooters ..they are everywhere ..

That depends entirely on what you plan to do. You can get a slice of pizza in a market, or a sandwich from a stand for 4-5 euros, or you can spend 100 pounds or more in an upscale restaurant. You can look up the entry fees for museums online, and the cost of a carnet of metro tickets (10- usually enough for 3 days). You could certainly do it on 200-300 pounds, or even less if you buy some bread and cheese in a produce shop and picnic in a park. It's really up to you to decide what you want to do. 

l wouId say severaI miIIion