Home Secretary Theresa May has warned that plans are being drawn up to stop jobless Greeks migrating to the UK, which could add to border control chaos this summer.
Ms May has revealed that Downing Street is planning for an influx of arrivals from Greece amid fears that the country will leave the euro. She said that "work is ongoing", as non-eurozone Britain is an attractive destination for the millions who might lose their jobs.
The Express reports that Labour MP Keith Vaz, chairman of the Home Affairs Select Committee, claims she has broken a basic rule of immigration by warning of the changes without implementing them immediately.
He says that he fears "absolute chaos" if Greeks choose to head to Britain during the Olympics.
He says: "The worst thing is to announce you're going to do something without saying what that something is.
"I don't think those in Greece who want to find work are going to wait for changes to come into force before they make their journey - they are going to start planning now. We need more details."
Avoid the airports and click on the image below for ten of the best UK holidays...
Ten of the best: active UK holidays
Migrant clampdown to cause airport chaos
Where better to try your hand at archery than in the heart of 1066 country? Self catering holiday village, Crowhurst Park in East Sussex has teamed up with an archery company to offer both Field Archery (in which archers move from target to target through wooded terrain, shooting 3D foam prey, including bears, deer and er, giant mosquitoes) and Target Archery (one of the Olympic sports).
You could try your hand at kayaking the man made rapids at the brand new Lee Valley White Water Centre (where the Olympic kayaking events are being held), but for a chance to paddle alongside porpoises, seals and even whales, head up to the Outer Hebrides for five days kayaking and camping among uninhabited islands and skerries.
While the Olympic cyclists whizz round and round the London velodrome, enjoy a rather more scenic view from your saddle on a Welsh biking holiday. The seven day 'Snowdonia Beano', cycling around Snowdonia National Park and the Lleyn Peninsula in July costs from £640 per person, which includes accommodation and yummy vegetarian meals. For more details on this and other cycling holidays, visit www.bicycle-beano.co.uk.
Stage your own mini Olympics at Siblyback Lake Campsite, on the edge of Bodmin Moor in Cornwall, which offers three Olympic watersports - kayaking, sailing and canoeing. Instructors are on hand to help train your junior athletes - perhaps for the 2020 Games?
Make like a minor royal and buff up your riding skills at Lucknam Park's outstanding equestrian centre, which includes 500 acres of parkland, an all weather arena, cross country course and riding clinics with equestrian experts Stephen Hadley and Richard Waygood. Non-riders can make the most of the hotel's Michelin-starred food and lush spa.
Spend a day clay pigeon shooting in scenic fields, gullies and among the trees with local farmer Jonty and his sons on a farm on the outskirts of the Lake District. Then retire to the cozy Plough Inn opposite for a soak in the freestanding bath, followed by local ale and lamb for dinner. Clay pigeon shooting available on Wednesdays and Saturdays, from £135 per room per night (beginners package from £150), www.theploughatlupton.co.uk
What with Wimbledon and the Olympics, its easy to get carried away by Pimms-fuelled fantasies about tennis whites and volleying. Indulge the dream at the Four Seasons' grand Georgian pile in Hampshire, which has two outdoor, all-weather, floodlit tennis courts and tennis pros on hand to polish up your backhand. Doubles from £258, www.four seasons.com/Hampshire
Find out for yourself why beach volleyball is the most popular Olympic spectator sport (nothing to do with the barely there bikinis the ladies play in, obv) on Brighton's answer to Copacabana, Yellowave Beach Sports Venue. (www.yellowave.co.uk). After a hard day on the beach, retire to the supremely classy surroundings of the Kemp Townhouse boutique b&b. Doubles from £95, www.kemptownhousebrighton.com
Crawling up and down an Olympic size swimming pool's all very well, but there's nothing like swimming in the wild to make you feel truly alive. Based at the snazzy Scarlet hotel, guests can enjoy a wild swimming tour of Cornwall's water, with professional instructors equipped with towels, rescue boards - and hot toddies! A 2-night package costs from £515 per person, including a private Wild Sea Swimming Lesson, with instructor and all equipment (including heated wetsuits!) and a ‘Short Journey’ in the Ayurvedic Spa. www.scarlethotel.co.uk
Learn to tell a flying jib from a gaff topsail on board the beautiful traditional wooden pilot cutter, Eve of St Mawes. A 6 day hands-on, island hopping voyage in the Isles of Scilly, departing from St Mawes, Cornwall, costs £720 per person. For details of this and other voyages, visit www.classic-sailing.co.uk.