A coalition of small business organisations, consumer groups and mobile operator Three have written to communications minister Ed Vaizey urging him to back calls to reduce international roaming costs more than the current proposals.
In the letter the co-signatories, which also include the Federation of Small Business, Which? and uSwitch.com, all warned that under current European Commission (EC) proposals data roaming would still equate to as much as £400 for 1GB, compared with just £10 in the UK.
The authors urged Vaizey to push the EC to do more to force operators themselves to lower the prices they charge one another, so this can be passed on to customers.
"At the root of high retail prices are the wholesale prices operators charge each other. If the maximum amount one operator can charge another at the wholesale level is limited, competition between operators will lead to lower retail prices," they said.
"Yet the Commission is proposing a wholesale cap more than 10 times higher than domestic retail prices. This means that if the proposals become reality, using the internet on your mobile phone in Europe could end up costing more than the trip itself."
The organisation also emphasised the issue this could have for businesses.
"Large, and particularly small businesses, feel the effects of the cost of downloading data and many place tight restrictions on the use of mobile devices by their executives when travelling abroad," it said.
"It is prohibitively expensive and, in the worst case scenario, stops firms from doing business abroad entirely."
The organisations urged Vaizey to back amendments proposed by other MEPs that would see the wholesale pricing operators can charge one another reduced to just €0.5 per MB.
The EC has attempted to tackle the cost of roaming for years, with operators forced to warn customers when they start using large amounts of data in order to help avoid so-called ‘bill shock' when returning from trips abroad.
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