Reasons for significantly lower than normal approach
The winds were coming from dead East 090°: See METAR, at >15kts. This strongly favours a landing on runway 10. The predominant winds in Blackpool are from the West, which may be why this is unusual to you.

The approach you mention is just one of the possibilities. The charts also give the option to approach directly from the West. Outside of the published approaches, one could imagine that ATC vectored the Cessna in on a quicker path to beat the incoming helicopter.