TEENAGER on a mission Seb Green has broken the 2,000-mile barrier on his round-Britain charity walk.

With two-thirds of the walk completed and Seb preparing to cross the border into Wales, he is on track to be back home in Weymouth before Christmas.

But with increasingly blistered feet - Seb is now on his fourth pair of boots - and winter on the way, he is in for a hard slog.

News of his progress came as supporters made a push for funds.

Seb, 18, from Littlemoor, sees it as his 'payback' walk, having been rescued by the coastguard after taking a boat for a joyride and ending up stranded in the Fleet.

Already half of the £20,000 he hoped to raise for the Dorset and Somerset Air Ambulance and the Starlight Children's Foundation has been pledged.

But organisers are also keen to keep his walking fund topped up.

They set aside a little over £100 per week to ensure Seb and his dog Flash have money for food, campsite fees and to replace equipment.

Duke of Edinburgh Award Officer for Dorset Mary Harper, who is leading Seb's support team, said: "The concern is that we only have two months of money left in the kitty."

Mrs Harper said Seb remains positive despite his feet feeling the strain due to a lot of road walking.

Arriving in Merseyside at the weekend, Seb found himself the guest of honour of Liverpool Fire and Rescue Service, which laid on a reception and put him up for the night in a new hospitality suite.

The following day the service's marine section ferried Seb and Flash across the River Mersey. Also on board were search and rescue dogs and their handlers.

People are asked to support a fundraising stall which will be set up in South Street, Dorchester, all day on Saturday October 4.

To keep track of Seb's progress and to pledge support visit www.sebsodyssey.org.uk