Media playback is unsupported on your device Media caption Nigel Farage: "There is no confusion. Anybody who legally came to Britain will be allowed to remain"

UKIP leader Nigel Farage has dismissed claims his party backs deporting existing EU migrants amid a row over comments made by its candidate in the Rochester and Strood by-election.

Mark Reckless suggested existing EU migrants would only be allowed to remain in the UK for "a transitional period" should the UK quit the EU.

But Mr Farage insisted UKIP respected the "rule of law and British justice".

And he downplayed the comments as a "minor cause for confusion".

Mr Farage insisted the by-election, in which his party is seeking to get its second Westminster MP elected, was being fought on UKIP's terms and the issue of immigration would "dominate" next year's general election campaign.

Election hustings

The row was sparked when former Conservative Mr Reckless was asked - at a televised hustings broadcast by ITV's Meridian - what would happen to EU migrants already living and working in Britain if the UK chose to leave the EU in a future referendum.

Media playback is unsupported on your device Media caption Mark Reckless's comments at the hustings sparked the row

He suggested they would be looked at "sympathetically" but should only be allowed to remain in the UK for "a fixed period".

Asked later on BBC Radio Kent if he was suggesting they should be deported, he said: "No I was not suggesting that."

Mr Reckless said EU citizens in the UK legally at the time the country left the EU would be able to stay in the country and accused Conservative critics of "twisting" his words.

'Hectic campaign'

Mr Farage told the BBC his colleague had been referring to the negotiations that would take place during a "transitional period" between a hypothetical vote to leave the EU and the actual moment of withdrawal.

"When we invoke Article 50 of the Lisbon Treaty which sets us off on a two-year negotiation to leave the EU, part of that renegotiations is what happens to retired people from Britain living on the Costa del Sol and what happens to people from Warsaw living in London," Mr Farage said.

Media playback is unsupported on your device Media caption Mark Reckless says he wants an "Australian-style, points-based system" of immigration

"Let me make this clear, during our divorce negotiations, even if the EU was to behave badly and say [British] people living in Spain were to be threatened with not being there, we would maintain the line that we believe in the rule of law, we believe in British justice and we believe that anyone who has come to Britain legally has the right to remain."

Asked if Mr Reckless did not know UKIP policy, Mr Farage said the campaign had been "long and hectic" and candidates in that situation often "got into a mode" of answering "on the topic and not the specific wording of the question".

'Mask slips'

But Conservative MP Damian Green said Mr Reckless had come "dangerously close" to advocating a repatriation policy while Labour's Yvette Cooper said Mr Reckless had "let the mask slip".

She said using the "language of repatriation" was "a policy that comes straight out of the last BNP manifesto and does not reflect British values".

Image copyright Conservative Party Image caption Election leaflet issued by the Conservatives

In a separate row on the last day of campaigning in the constituency, Mr Reckless accused the Conservative candidate Kelly Tolhurst of issuing a leaflet he described as "BNP-light" in its comments on immigration.

Ms Tolhurst told the BBC that Mr Reckless's claim was a "lie", and said she was disappointed at the misrepresentation of her views.

The paragraph of the leaflet in question reads: "Most people I know here have worked hard all their life, played by the rules and paid their fair share. But we sometimes struggle to access some of the services we need because of uncontrolled immigration. Others don't feel safe walking down the high street of our town. And those who are most vulnerable are being let down by a hospital that needs to do better."

Ms Tolhurst then begins a new paragraph outlining her six-point program focusing on issues including immigration, health, crime, housing, and jobs.

BBC political editor Nick Robinson said the controversy today stems from the fact that UKIP are now facing the same sort of scrutiny as the established Westminster parties - scrutiny "that is not always comfortable".

The Rochester and Strood by-election takes place on Thursday. Polling stations will be open from 07:00 GMT to 22:00 GMT.

The full list of candidates, in alphabetical order by surname, is:

Barker, Mike - Independent

Challis, Christopher - Independent

Davidson, Hairy Knorm - Official Monster Raving Loony Party

Fransen, Jayda - Britain First

Goldsbrough, Stephen William - Independent

Gregory, Clive - Green Party

Juby, Geoff - Liberal Democrats

Khan, Naushabah - Labour

Long, Nick - People Before Profit

Osborn, Dave - Patriotic Socialist Party

Reckless, Mark - UK Independence Party

Rose, Charlotte - Independent

Tolhurst, Kelly - Conservative