A leading scientist has warned that new measures to contain the spread of virus both in Scotland and in England do not go "far enough".

Professor John Edmunds, a member of the UK Government's Scientific Advisory Group for Emergencies (Sage), said while it is welcome ministers have "done something", the curfew on bars and restaurants is likely to have a "trivial" effect.

He told BBC Radio 4's Today programme: "I think working from home if you can is certainly a good idea. I think that the measures in terms of closing bars an hour early and restaurants at 10 - I mean, nobody goes to a restaurant after 10 anyway.

"I think that's fairly trivial in terms of it'll have a small impact on the epidemic.

"Overall I don't think that the measures have gone anywhere near far enough. In fact I don't even think the measures in Scotland have gone far enough."

The new strategy for England - announced six months after the lockdown was introduced in March - will see office staff once again working from home, the wider use of face masks and a 10pm curfew on pubs and restaurants.

Businesses will face £10,000 fines or closure for failing to comply with regulations, and people risk £200 penalties is they do not wear masks or breach the "rule of six".

The military could be used to free up police officers to tackle coronavirus rule-breakers, and Mr Johnson said the measures may need to be in place for a further six months.

In Scotland, First Minister Nicola Sturgeon went further, imposing a ban on household visits from today as well as bringing in a 10pm pub curfew.

She also advised people from different households not to travel in the same car and urged people not to go overseas on holiday during the October school break.

Prof Edmunds, speaking in a personal capacity, said action twas not taken quickly enough in March and that "mistake" is about to be repeated.

He warned: "I suspect we will see very stringent measures coming in place throughout the UK at some point, but it will be too late again.

"We will have let the epidemic double and double and double again until we do take those measures.

"And then we'll have the worst of both worlds, because then to slow the epidemic and bring it back down again, all the way down to somewhere close to where it is now or where it was in the summer, will mean putting the brakes on the epidemic for a very long time, very hard.

"Which is what we had to do in March because we didn't react quick enough in March, and so I think that we haven't learned from our mistake back then and we're unfortunately about to repeat it."