Anyone in London do Yoga?

In an attempt to get fitter and strengthen my back I'm trying to start playing squash and doing yoga.

Both need time planning / pre-booking.

My question is whether at the start booking a yoga session the evening after playing squash is a good idea? I can think of pros and cons. Or would a rest day be a better idea?

I have fairly poor flexibility, but I think I'm average fitness - ie I don't run, but if you asked me right now I could do a light, but constant 20-30mins jog without stopping or dying.

The yoga class in question would be "Hot Rocket Yoga":

Dynamic yoga that gets you there faster……
A fun and invigorating sequence with the focus on linking movement and breath to create a strong vinyasa flow. This class will make you sweat! Strengthen the body, develop the core, increase flexibility and improve balance and posture while bringing calmness and clarity to the mind. Open and challenging to all levels from beginner to advanced, with a specially mixed soundtrack to keep the energy moving.

The ROCKET system is considered to be the original power yoga, created by Larry Shultz of ‘Its Yoga, San Francisco’ to free up the Ashtanga yoga series as pioneered by Sri Pattabhi Jois.

Also other than a towel and water is their anything I need to bring, or any tips I might not think of?

Cheers.