I can think of a whole raft of reasons why Britain should leave the EU, the introduction of tamper-proof packaging for olive oil in restaurants isn’t one of them.
IMO anyone who takes an anti-EU position based on how olive oil dipping bowls are presented in restaurants needs to learn grownup politics, besides the fact that it is rather bizarre to feel strongly that olive oil dipping bowls shouldn’t be in tamper-proof packaging.
And that BBC article in the link is deeply misleading imo. There has been a dramatic increase in negative attitudes towards the EU across Europe, but it has absolutely nothing to do with regulations such as this one and everything to do with the economic crises now gripping much of the EU.
The biggest change in attitude is in countries such as Spain which is suffering severely in the economic downturn, and the smallest change is among East European countries which have not suffered anywhere as much economically. It has nothing to do with olive oil packaging, the shape of bananas, or any other Daily Mail/Sun fueled nonsense.