It looks like its 3 sessions for £45, ie £15 a session of (almost 1-2-1) tuition, which would include entry price to the lake.
The normal swimming prices for Beckenham Swimming Lake this year are £5 for an adult, £3 per child.
Only 1 hour slots, but that's the same everywhere this year - plenty of grass outside the Lake & a cafe nearby...
- Adult: £5 (£6 for non Lewisham residents)
- Child: £3 (£3.50 for non Lewisham residents)
- Family (five people with a maximum of three adults): £16
Swimming in the lake