The EU directive also bans packs of 10, but some say it will boost the black market in tobacco as cheaper alternatives are sought.
The former Lib Dem safe seat has now become a marginal, with everything to play for in the forthcoming election.
The new maps of the UK could help hay fever and asthma suffers decide where to go on holiday or even where to buy a house.
The Duchess of Cambridge is said to be excited about her sister's wedding, but is a "bit worried" about her children's behaviour.