Gym in South Hampstead

HIIT Classes Belsize Park: Intensity With a Plan Behind It

HIIT classes Belsize Park done properly: coached intervals, strength support and measurable progress at BTX on Finchley Road. Book a free call today.

25 May 2026

Gym in South Hampstead

Pre and postnatal fitness Swiss Cottage: a staged, symptom-led return to training for local mothers at BTX near Finchley Road. Book a free call.

23 May 2026

Free strategy call

Pick a time for your free 15 minute strategy call and a BTX coach will ring you then.