Bike hire for Ride London 2022

Hey everyone,

My dad is doing Ride London in May and he was planning on borrowing my Road Bike (He just rides Mountain Bikes) but I’ve now sold my road bike so going to rent him a decent bike. Any recommendations for who does good bike rental for the weekend of the Ride London Event.

Guessing would need to collect/delivery in London on Saturday and return either Sunday evening or Monday?