National Grid is one of the companies that can help improve your portfolio income through large dividend payouts. Great dividend payers create a safe bet to increase investors’ portfolio value as payouts provide steady income and cushion against market risks. Dividends play a key role in compounding returns over time and can form a large part of our portfolio return. If you’re a buy and hold investor, these healthy dividend stocks can generously contribute to your monthly portfolio income.
National Grid plc (LSE:NG.)
National Grid plc transmits and distributes electricity and natural gas. Founded in 1990, and currently run by John Pettigrew, the company provides employment to 22,132 people and with the company’s market capitalisation at GBP £29.92B, we can put it in the large-cap stocks category.
NG. has a juicy dividend yield of 5.37% and distributes 98.88% of its earnings to shareholders as dividends . Over the past 10 years, NG. has increased its dividends from £0.3218 to £0.4829. They have been consistent too, not missing a payment during this 10 year period. 
Greene King plc (LSE:GNK)
Greene King plc operates as a pub retailer and brewer in the United Kingdom. Started in 1799, and currently run by Rooney Anand, the company now has 40,658 employees and has a market cap of GBP £1.60B, putting it in the small-cap category.
GNK has a sumptuous dividend yield of 6.43% and is currently distributing 67.71% of profits to shareholders . Although there has been some volatility in the company’s dividend yield, the DPS over a 10 year period has increased from £0.229 to £0.332. If analysts predictions are right, Greene King has some strong earnings growth on the short-term horizon with an expected increase in EPS of 34.7% over the next 12 months. 
Bovis Homes Group PLC (LSE:BVS)
Bovis Homes Group PLC designs, builds, and sells new homes for private customers and registered social landlords primarily in the United Kingdom. Started in 1885, and run by CEO Gerald Fitzgerald, the company size now stands at 1,253 people and with the market cap of GBP £1.51B, it falls under the small-cap category.
BVS has an alluring dividend yield of 4.26% and the company has a payout ratio of 56.74% , with analysts expecting a 82.28% payout in the next three years. Despite some volatility in the yield, DPS has risen in the last 10 years from £0.35 to £0.475. 