Southern, c2c, South West and Southeastern all saw large percentage increases in the level of complaints about their service, which may be linked to the chaos that followed the upgrade of London Bridge.

Complaints rose between 23% and 50% for the companies, according to the Office of Rail Regulation.

Virgin West Coast cemented its status as the nation's most complained about operator.

The operator received 227.9 complaints for every 100,000 journeys taken in the 2014-15 financial year.

This is an increase of 20.5% when compared to the 189.1 complaints per 100,000 journeys that were received in 2013-14.

Virgin West Coast trains are comfortably the most complained about operator in the country. Virgin East Coast trains are the second most complained about with 141.7 complaints for every 100,000 journeys taken.

• Also online: London Bridge passengers still face daily disruption

Nationally the rate of rail complaints rose slightly in 2014-15 from 29 per 100,000 journeys in 2013-14 to 29.1 in 2014-15.

Although this is an increase the number for 2014-15 is still in line with a longer term trend of decline in the number of complaints being received by train companies.

Ten years ago, in the 2005-06 financial year, operators received 74.4 complaints for every 100,000 journeys.

What will be of slightly more concern to rail bosses is the drop in passenger satisfaction levels that has been observed over the past few years.

In 2014-15 81 per cent of passengers were satisfied overall with their experience compared to 83% in 2013-14 and 85.2 per cent in 2012-13.

The last time satisfaction rates were lower than this was in 2007-08.

Train punctuality and reliability remains the topic people complain most about but the proportion has dropped from 41.2 per cent to 32.2% this year.

Train facilities are attracting more complaints, as are complaints about refund policies and lack of room for passengers.

COMPLAINTS PER 100,000 JOURNEYS RANKED BY % CHANGE IN PAST YEAR

Operator // Complaints 2013-14 // Complaints 2014-15 // % Change

c2c // 13.4 // 20.1 // 50%

Southern // 7.4 // 9.5 // 28%

South West Trains // 13.1 // 16.5 // 26%

Southeastern // 13.4 // 16.5 // 23%

Virgin Trains West Coast // 189.1 // 227.9 // 21%

Merseyrail // 14.9 // 17.6 // 18%

Northern // 31.1 // 36.2 // 16%

CrossCountry // 51.4 // 59.3 // 15%

Greater Anglia // 30.3 // 31.2 // 3%

London Overground // 2.9 // 2.9 // 0%

Arriva Trains Wales // 60.9 // 59.4 // -2%

First ScotRail // 25.1 // 23.7 // -6%

Virgin Trains East Coast // 152.2 // 141.7 // -7%

Chiltern Railways // 87.2 // 74.1 // -15%

East Midlands Trains // 78.5 // 66 // -16%

First TransPennine Express // 52.3 // 43.1 // -18%

First Great Western // 53.6 // 38.6 // -28%

Govia Thameslink Railway // 22.5 // 15.8 // -30%

London Midland // 43 // 29.8 // -31%