Head to the Beach 
Float out on a Boat
Go Bowling
Take a Bike ride
Have a Barebeque
Go to Bingo
Bar Crawl for Booze!
Brewery Tour
Baking together
Eat/Make Burgers

Tourist Attractions
Buckler’s Hard (An historic maritime village near Southampton)
Brixton Academy (Hit this London venue for a gig)
Beaulieu (Motor museum and gardens in Hampshire)

Day Trips & Weekends Away
Butlins
Brighton
Bournemouth
Bath
Bristol
Birmingham
Blackpool

and for the little more adventurous…
Belfast
Berlin
Barcelona
Bruge/Belgium
Bulgaria