The chart states that the zone frequency is Solent, but from training I think you call up Bournmouth.
The information is available on the chart-Bournemouth control the CTR, Solent control the CTA. Probably not the best procedure to rely on memories of a flight 9 months ago!
Having said that, if you did call up the wrong unit, they'd soon put you right, Solent are not as scary as often suggested on here
Enjoy the flight!