well took them to LBS whom got them no bother, other than it took 2 of them to do it

However getting it home, i realise now how bad these wheels are that came with bike, 2 tubes burst at valve due to poor machining of hole in rim, really poor. So they have now been off twice and back on by myself

I`m now out of inner tubes, so need to buy some more however i hope never to use them in anger anytime soon.
BTW 700x25 tyres fit on the langster if anyone else was wondering, however, it really depends on how far back your rear tyre sits for if your chain is short then you will fowl the brake boss.