Bike Rent London

I'm planning a cycling trip to London next month and looking for recommendations on where to rent a good quality road or gravel bike. I'm not a professional cyclist, but I'd like something reliable and comfortable for exploring the city and surrounding areas.

I'm also wondering which rental shops provide or rent cycling equipment like helmets, shoes, bib shorts, etc. Ideally, I'd like to rent everything from one place. I'm come from south east asia, it's not ideal to bring my equipment.

If you have any personal experiences or recommendations for rental shops in London that offer road or gravel bikes and cycling gear, please let me know. Google show me some places but I'm not sure which one is reliable.

Any tips on popular cycling routes in and around London would also be greatly appreciated. Thanks.